CN116003867A - Foam composite material and packaging buffer material formed by same - Google Patents

Abstract

The invention provides a foaming composite material containing a plurality of first foaming granules and a plurality of second foaming granules and a packaging buffer material formed by the foaming composite material, which are used for extrusion bonding and shaping to form a structure body. The first expanded pellet has at least a first cross-section through its central cross-section that is substantially circular and has a first diameter. The second expanded pellet has at least a second cross-section along its major axis through its central cross-section that is substantially elliptical and has a second diameter along its major axis. The second diameter is smaller than the first diameter. In the foaming composite material, the first foaming granules are respectively made of preset foaming materials, and the second foaming granules at least comprise part of preset foaming materials. In the case where the first foamed pellets are mixed with the second foamed pellets, the second foamed pellets are filled in the gaps between the first foamed pellets.

Description

Foam composite material and its packaging cushioning material

technical field

The invention relates to a foamed composite material and the packaging buffer material formed therefrom. Specifically, the present invention relates to a foamed composite material having a first foamed pellet and a second foamed pellet and the packaging cushioning material formed therefrom.

Background technique

The finished product made by extruding and bonding the foamed material can be used as a lightweight packaging cushioning material for packaging, carrying or protecting objects. However, there may be many voids between the foamed particles of such packaging cushioning materials, so that the packaging cushioning materials are easily broken or peeled off from the voids under impact or pressure. As mentioned above, the integrity, stability, and protection of packaging cushioning materials that are prone to breaking or peeling can thereby be reduced, and may undesirably soil or contaminate the packaged items. In addition, chips or fragments of broken or peeled packaging cushioning materials also complicate the cleaning and recycling of such packaging cushioning materials. Therefore, it is desired to develop a foam composite material and a packaging cushioning material formed therefrom that can improve the above-mentioned defects.

Contents of the invention

technical means to solve problems

In order to solve the above problems, according to an embodiment of the present invention, a foamed composite material is proposed for extrusion bonding and shaping to form a structure. The foamed composite material comprises: a plurality of first foamed pellets, at least one first section through its central section is substantially circular and has a first diameter; and a plurality of second foamed pellets along the At least one second section along its long axis passing through its central section is substantially elliptical and has a second diameter on the long axis, wherein the second diameter is smaller than the first diameter. Wherein, the first foamed pellets are respectively made of preset foamed materials, and the second foamed pellets respectively contain at least part of preset foamed materials. In addition, in the foamed composite material, when the first foamed pellets are mixed with the second foamed pellets, the second foamed pellets fill the voids between the first foamed pellets.

Another embodiment of the present invention provides a packaging cushioning material, which is a structure formed by extruding and bonding the above-mentioned foamed composite material. The packaging buffer material includes: a plurality of first particles, which are formed by extrusion bonding of the first foamed particles; and a plurality of second particles, which are formed by extrusion bonding of the second foamed particles knot formed. Wherein, each first particle in the structure is bonded to other first particles. Wherein, there are a plurality of first gaps between the mutually bonded first particles in the structure, and each first gap is formed between adjacent parts of the first particles, and each first gap is smaller than each first particle. Wherein, the second particles in the structure are respectively filled in the first gaps.

Compared with the technical effect of the existing technology

The foamed composite material and the packaging buffer material formed according to the embodiments of the present invention can improve the integrity and stability of the structure formed by extrusion bonding and shaping. Therefore, when the packing cushioning material packs, supports, or protects the object, the protection of the object can be further improved. In addition, since the possibility of peeling or breaking can be reduced, the foamed composite material and the packaging cushioning material formed according to the various embodiments of the present invention can reduce the unintended contamination of the object when packaging, carrying, or protecting the object or pollution. Therefore, the foamed composite material and the packaging cushioning material formed according to various embodiments of the present invention can improve reliability and cleanliness when packaging, carrying, or protecting objects.

Description of drawings

FIG. 1 is a schematic view of a foamed composite material composed of a plurality of first foamed pellets and a plurality of second foamed pellets according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a foamed composite material according to another embodiment of the present invention.

3A and 3B are schematic views of the cross-sectional shape and size of the first foamed pellets according to an embodiment of the present invention.

4A and 4B are schematic diagrams showing the cross-sectional shape and size of the second foamed pellets according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of the second foamed particles filling the gaps between the first foamed particles in the foamed composite material according to another embodiment of the present invention.

FIG. 6 is a schematic diagram of processing a foamed composite material to form a structure according to an embodiment of the present invention.

Fig. 7 is a three-dimensional schematic diagram of a packaging cushioning material made of a foamed composite material through extrusion bonding and shaping according to another embodiment of the present invention.

Fig. 8 is a schematic diagram of the relative arrangement of the first particles and the second particles respectively formed by the first foamed pellets and the second foamed pellets in the packaging cushioning material according to an embodiment of the present invention.

Explanation of reference signs:

10: Foam composite material

100: the first foamed pellets

100': first particle

200: the second foamed pellets

200': second particle

500: processing program

1000: Packaging cushioning material

AX1: long axis

AX2: short axis

C1: center

C2: center

L1: first diameter

L2: second diameter

L3: third diameter

M: Mold

O: structure

P1: first profile

P2: second profile

R: local region

V: Void

V1: First Gap

Detailed ways

Various embodiments will be described below, and those skilled in the art can easily understand the concept and principle of the present invention with reference to the description and accompanying drawings. However, while some specific embodiments will be described in detail, these embodiments are illustrative only and are not to be considered restrictive or exhaustive in all respects. Therefore, for those skilled in the art, without departing from the concept and principles of the present invention, various changes and modifications to the present invention should be obvious and easily implementable.

Referring to FIG. 1 and FIG. 2 , according to an embodiment of the present invention, a foamed composite material 10 for forming a structure by extrusion bonding and shaping is disclosed. As above, the foamed composite material 10 may include a plurality of first foamed pellets 100 and a plurality of second foamed pellets 200 . Wherein, the first foamed pellets 100 can be respectively made of a predetermined foamed material, and the second foamed pellets 200 can respectively contain at least part of the preset foamed material.

As mentioned above, in the case that the first foamed pellets 100 and the second foamed pellets 200 have part of the same predetermined foaming material, the extrusion bonding of the foamed composite material 10 can be further promoted. Binding when styling. In addition, when the finished product made by the extrusion bonding of the inventive composite material 10 is recycled after use, the difficulty and complexity of additional sorting and recycling can be reduced or avoided due to having part of the same predetermined foaming material. Therefore, the integrity of extrusion bonding and shaping of the foamed composite material 10 and the convenience of recycling can be improved.

Specifically, the predetermined foaming material may be any material that can be foamed to form a volume-expanded structure. For example, the preset foam material may be expanded polystyrene (EPS) (commonly known as Styrofoam), expanded polystyrene (EPP), expanded ethylene polymer (EPO) or expanded polyethylene ( EPE), etc., but other embodiments of the present invention are not limited thereto. Wherein, as mentioned above, the first foamed pellets 100 can be made of the preset foamed material respectively, and the second foamed pellets 200 can also be made of the preset foamed material respectively into, or include part of the preset foam material and part of other materials.

According to some embodiments, in addition to part of the pre-set foam material, the second foamed pellets 200 can be made by further using regenerated foam material recycled from the pre-set foam material after foaming. Therefore, the recyclability of these predetermined foaming materials can be further improved, thereby reducing the demand and consumption of resources for the raw materials of such predetermined foaming materials, and can promote the recycling and reuse of resources, reducing these Environmental problems caused by product disposal and disposal.

As mentioned above, the second foamed pellets 200 may include the preset foam material and the recycled foam material after the preset foam material is foamed. For example, the first expanded pellets 100 can be made of expanded polystyrene (EPS), and the second expanded pellets 200 can also be made of expanded polystyrene (EPS), but the Some of the second expanded pellets 200 may include part of the material is expanded polystyrene (EPS) made directly from the raw material, and part of the material is regenerated recycled foamed polystyrene (EPS) after foaming. Material.

As mentioned above, the first foamed pellets 100 and the second foamed pellets 200 can be substantially all made of materials with the same chemical structure or chemical formula, so as to improve the integrity and recycling of extrusion bonding and shaping. convenience. However, in this case, according to some embodiments, although the chemical structures or chemical formulas are the same, the second foamed pellets 200 may at least partially contain recycled materials that have been recycled. In addition, as disclosed above, according to some embodiments, the second foamed pellets 200 may also be completely made of brand-new rather than recycled preset foamed materials, and have the same chemical composition as the first foamed pellets 100. structure or chemical formula.

Next, referring to FIG. 3A and FIG. 3B, according to an embodiment of the present invention, at least one first section P1 of the above-mentioned first expanded pellet 100 passing through its center C1, such as a geometric center section, can be substantially circular and have The first diameter L1. For example, the first expanded pellets 100 may be substantially spherical with a first diameter L1. In addition, referring to FIG. 4A and FIG. 4B, according to an embodiment of the present invention, at least one second section P2 of the above-mentioned second expanded pellet 200 passing through its center C2 along its long axis AX1, such as a geometric center section, can be substantially It is elliptical and has a second diameter L2 on the major axis AX1. For example, the second expanded pellets 200 may be substantially ellipsoidal. Among them, although there may be some differences between the first expanded pellets 100 due to process tolerances and the cross-sectional shape may therefore be circular or nearly circular, and there may be some differences between the second expanded pellets 200 due to process tolerances. Therefore, the cross-sectional shape may be oval or nearly oval, but overall, the second diameter L2 of the second expanded pellet 200 on the long axis AX1 is substantially smaller than the first diameter L1 of the first expanded pellet 100 .

Based on the above, according to some embodiments, the diameter of the cross-section of any second foamed pellet 200 passing through its center C2 may be smaller than the diameter of any cross-section of any first foamed pellet 100 passing through its central C1 cross-section. Therefore, the overall size of the second foamed pellets 200 can be smaller than that of the first foamed pellets 100 .

In addition, according to some embodiments, as shown in FIG. 4B , the second section P2 of the second expanded pellets 200 may have a second diameter L2 on the major axis AX1 and a third diameter L2 on the minor axis AX2 thereof. diameter L3. Based on the above, according to the present embodiment, the third diameter L3 may be 1/5˜2/3 of the second diameter L2.

Next, referring to FIG. 5 , in the foamed composite material 10, when the first foamed grains 100 defined above are uniformly mixed with the second foamed grains 200, the second foamed grains The pellets 200 can fill in the gap V between the first foamed pellets 100 . Specifically, the shapes of different first expanded pellets 100 are not complementary, and therefore even in the case of being closely adjacent to each other, different adjacent first expanded pellets 100 will still be at least The void V is partially left, and thus the degree of bonding and strength therebetween is reduced. In addition, the above-mentioned second foamed pellets 200 having a second diameter L2 shorter than the first diameter L1 on the major axis AX1 can be filled into the voids V. As mentioned above, since at least one second cross-section P2 passing through the cross-section of the center C2 can be substantially elliptical, the second expanded pellets 200 can be further extended and disposed in the void V that is not formed in a circular or spherical shape.

In detail, the lengths of the first expanded pellets 100 relative to the center C1 may have isotropy, and the lengths of the second expanded pellets 200 relative to the center C2 are at least between the major axis AX1 and the minor axis AX2. It may not have isotropy, and the diameter and volume of the first expanded particles 100 are larger than those of the second expanded particles 200 . Therefore, the gaps V between adjacent first foamed pellets 100 that are difficult to fill with other first foamed pellets 100 can be easily filled by the second foamed pellets 200 . As mentioned above, by filling the voids V with the second foamed pellets 200 , the compactness of the overall foamed composite material 10 can be further improved.

In addition, according to some embodiments, the overall density and local density of the foamed composite material 10 can be further adjusted by configuring the densities of the first foamed particles 100 and the second foamed particles 200 respectively. For example, although the first expanded pellets 100 and the second expanded pellets 200 can also be made of expanded polystyrene (EPS), the second expanded pellets 200 The density may be different from that of the first expanded pellets 100 . For example, the density of the second foamed pellets 200 may be greater than the density of the first foamed pellets 100 . Therefore, when the structure is formed by extrusion bonding and shaping, it is possible to strengthen and stabilize the junction of the first expanded pellets 100 while reducing the weight of the main body composed of the first expanded pellets 100 as much as possible. Strength, or when the second foamed pellets 200 contain the recycled foam material, they can be configured with a higher density to make up for the unexpected defects that the recycled foam material may produce. Based on the above, according to different embodiments, the density of the first expanded pellets 100 and the density of the second expanded pellets 200 can be adjusted based on requirements, designs, costs and materials, so that the strength of the final product , density, cohesion, and weight all met expectations.

Further, for the foamed composite material 10, based on the deployment of the respective densities of the first foamed pellets 100 and the second foamed pellets 200, the weight ratio of the second foamed pellets 200 can be 5% to 95%. Wherein, if the regenerated foam material is included, for each second foamed pellet 200 , the weight ratio of the regenerated foam material can be 5%-95%. That is, each second foamed pellet 200 may contain 95%-5% of the preset foam material, and may contain 5%-95% of the regenerated foam material. In addition, different second foamed pellets 200 may also contain different proportions of the preset foam material and the regenerated foam material. In addition, according to some embodiments, in order to improve the recyclability of resources or comply with relevant environmental regulations, for the foam composite material 10 , the weight ratio of the recycled foam material may be greater than 5%.

Next, the packaging cushioning material 1000 of the structure made according to the foam composite material 10 will be further described with reference to FIGS. 6 to 8 .

On top of that, as shown in FIG. 6 , according to some embodiments, the above-mentioned foamed composite material 10 can be installed in a mold M with a predetermined shape, and can be subjected to, for example, extrusion bonding and shaping or even steam heating to slightly melt the surface. etc. processing procedure 500. Therefore, referring to FIG. 7 , the above-mentioned foamed composite material 10 can be made into a structure O having a predetermined shape through the restriction of the mold M. The above-mentioned structure O can maintain a predetermined shape, and thus can be used as the packaging cushioning material 1000 for packaging, carrying or protecting specific objects.

As mentioned above, a packaging cushioning material 1000 according to this embodiment can be a structure O formed by extruding and bonding the foamed composite material 10 of the above embodiments. Therefore, referring to FIG. 8 , which shows an enlarged schematic view of a partial region R in FIG. 7 , the packaging cushioning material 1000 may include a plurality of first particles 100 formed by extrusion bonding and shaping of the first foamed particles 100 ', and a plurality of second particles 200' formed from the second foamed pellets 200 through extrusion bonding and shaping. As mentioned above, the respective first particles 100' in the structure O are bonded to each other with other first particles 100', and the first particles 100' bonded to each other in the structure O may have A plurality of first gaps V1 filled by the first particle 100'. Each first gap V1 may be formed between adjacent portions of the first particles 100'. For example, each first gap V1 may be formed between closely bonded adjacent portions of the first particles 100'. As mentioned above, the second particles 200' can be further filled in each of the first gaps V1 respectively.

As shown in Figures 7 and 8, in the packaging cushioning material 1000 formed by extrusion bonding and shaping, the first particles 100' and the second particles 200' can be combined with the original first foamed particles 100 and the second foamed particles. The shapes of the foam pellets 200 are different. Specifically, the original first foamed pellets 100 and the second foamed pellets 200 may be at least partially deformed after becoming the first pellets 100' and the second pellets 200' due to extrusion and bonding. In addition, in some embodiments, if further heating, melting or foaming, etc., the original first expanded pellets 100 and second expanded pellets 200 become first pellets 100' and second pellets 200' After that, they may even expand further and squeeze each other out of shape. Therefore, the second particles 200 ′, whose length relative to the center is at least less than the long axis and non-isotropic on the short axis, can be squeezed in the first gap V1 between the first particles 100 ′ to extend to the second particle 100 ′ more easily. A gap V1 is deeper in the gap, such as but not limited to a gap with sharp corners. Therefore, by filling the second particles 200' between the first particles 100', the compactness of the overall packaging cushioning material 1000 can be improved, and the integrity, stability and protection of the finished packaging cushioning material 1000 can be improved. In addition, the packaging cushioning material 1000 thus produced can reduce or avoid the possibility of peeling or breaking due to impact or pressure, or even soiling or contaminating the packaged items.

Further, according to different embodiments, the densities of the original first foamed pellets 100 and the second foamed pellets 200 can be selectively configured so that the densities of the finally formed first pellets 100' are the same as those of the first foamed pellets 100'. The densities of the second particles 200' are different. For example, the density of the original second expanded pellets 200 can be selectively configured to be greater than the density of the first expanded pellets 100, so that the density of the finally formed second pellets 200' is greater than that of the first expanded pellets. Density of particles 100'. In addition, through the configuration of the above density, the weight ratio of the second particles 200' for the packaging cushioning material 1000 can be 5%-95%.

Based on the above, since the packaging cushioning material 1000 is made based on the foamed composite material 10 of the above-mentioned embodiments, those skilled in the art should be able to understand the packaging cushioning material from the above description of the foamed composite material 10 1000's of properties. For example, the first particles 100' can be respectively made of preset foaming material, and the second particles 200' can respectively contain at least part of the preset foaming material. Wherein, the predetermined foam material may be, for example but not limited to, expanded polystyrene (EPS), expanded polystyrene (EPP), expanded ethylene polymer (EPO) or expanded polyethylene (EPE). In addition, the second particles 200' may include a preset foam material and a regenerated foam material that is recycled and remade after the preset foam material is foamed.

As mentioned above, in the case that the second particles 200' include regenerated foam material, for each second particle 200', the weight ratio of the regenerated foam material may be 5%-95%. In addition, according to some embodiments, by configuring the relative density ratio of the first particles 100' and the second particles 200', for the packaging cushioning material 1000, the weight ratio of the recycled foam material can be greater than 5%. Therefore, a high degree of utilization of the recycled foaming material can be realized, thereby improving the recyclability of resources, and further improving the environmental protection of the overall packaging cushioning material 1000 while further enhancing its stability. Based on the above, since the source of the preset foaming material is mainly plastic material, the global plastic reduction issue is increasingly fermented, the foaming composite material 10 according to this embodiment and the packaging cushioning material 1000 made thereof can be Further achieve the purpose of plastic reduction, and can comply with the production-related environmental protection regulations formulated by various places, thereby promoting the development of circular economy.

In summary, the foamed composite material and the packaging cushioning material made of it according to various embodiments of the present invention can have better compactness, integrity, reliability and cleanliness, and can be configured to be used in more Securely pack, carry and protect intended items.

What have been described above are only some preferred embodiments of the present invention. It should be noted that various changes and modifications can be made to the present invention without departing from the concept and principle of the present invention. It should be clear to those skilled in the art that the present invention is defined by the appended claims, and within the meaning of the present invention, all possible replacements, combinations, modifications and diversions and other changes do not exceed the scope of the present invention. The scope defined by the appended claims.

Claims (17)

1. A foamed composite material for extrusion bonding forming a structure comprising:

a plurality of first foamed pellets having at least a first cross-section substantially circular through a central cross-section thereof and a first diameter; and

A plurality of second foamed pellets having at least a second cross-section through their central cross-section along their major axis that is substantially elliptical and having a second diameter on the major axis, wherein the second diameter is smaller than the first diameter and

wherein the first foaming granules are respectively made of a preset foaming material, and the second foaming granules at least comprise part of the preset foaming material; and is also provided with

In the foamed composite material, when the first foamed particles and the second foamed particles are mixed, the second foamed particles fill in gaps among the first foamed particles.

2. The foamed composite material of claim 1, wherein the density of the second foamed pellets is different from the density of the first foamed pellets.

3. The foamed composite material of claim 2, wherein the density of the second foamed pellets is greater than the density of the first foamed pellets.

4. The foamed composite of claim 1, wherein the pre-set foamed material is Expanded Polystyrene (EPS), expanded polystyrene (EPP), expanded Ethylene Polymer (EPO), or Expanded Polyethylene (EPE).

5. The foamed composite material of claim 1, wherein the second foamed pellets comprise the predetermined foamed material and a reblowing foamed material recovered after the predetermined foamed material is foamed.

6. The foamed composite material of claim 5, wherein the weight ratio of the regenerated foamed material is 5% to 95% for each of the second foamed pellets.

7. The foamed composite material of claim 5, wherein the weight ratio of the regenerated foamed material is greater than 5% for the foamed composite material.

8. The foamed composite material of claim 1, wherein the second foamed pellets comprise 5% to 95% by weight of the foamed composite material.

9. The foamed composite material of claim 1, wherein the second cross section of the second foamed pellets has the second diameter on the major axis and a third diameter on the minor axis, and

wherein the third diameter is 1/5-2/3 of the second diameter.

10. A packaging cushioning material which is a structure formed by extrusion bonding and shaping the foamed composite material according to claim 1, and which comprises:

the first granules are formed by extrusion bonding and shaping of the first foaming granules; and

A plurality of second particles formed by extrusion bonding and shaping the second foaming granules

Wherein the respective first particles in the structure are bonded to each other with other first particles,

wherein the first particles bonded with each other in the structure have a plurality of first gaps formed between adjacent portions of the first particles, each of the first gaps being smaller than each of the first particles, and

wherein the second particles in the structure are respectively filled in each first gap.

11. The packaging cushioning material of claim 10, wherein the second particles have a density different from a density of the first particles.

12. The packaging cushioning material of claim 11, wherein the second particles have a density greater than the first particles.

13. The packaging cushioning material of claim 10, wherein the first particles are each made of a predetermined foam material, and the second particles each comprise at least a portion of the predetermined foam material, and the predetermined foam material is Expanded Polystyrene (EPS), expanded polystyrene (EPP), expanded Ethylene Polymer (EPO), or Expanded Polyethylene (EPE).

14. The packaging cushioning material of claim 13, wherein the second particles comprise the predetermined foam material and a reblowing foam material recovered after foaming of the predetermined foam material.

15. A packaging cushioning material according to claim 14, wherein the weight ratio of the recycled foam material for each of the second particles is from 5% to 95%.

16. The packaging cushioning material of claim 14, wherein the weight ratio of the recycled foam material is greater than 5% for the packaging cushioning material.

17. The packaging cushioning material of claim 10, wherein the second particles comprise 5% to 95% by weight of the packaging cushioning material.

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