CN107351360A - Method for making hard-shell travel box - Google Patents
Method for making hard-shell travel box Download PDFInfo
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- CN107351360A CN107351360A CN201610300492.5A CN201610300492A CN107351360A CN 107351360 A CN107351360 A CN 107351360A CN 201610300492 A CN201610300492 A CN 201610300492A CN 107351360 A CN107351360 A CN 107351360A
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- shell
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- parison
- suitcase
- shell suitcase
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 27
- 238000000071 blow moulding Methods 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000001746 injection moulding Methods 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- -1 polyethylene terephthalate Polymers 0.000 claims description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4205—Handling means, e.g. transfer, loading or discharging means
- B29C49/42069—Means explicitly adapted for transporting blown article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/4273—Auxiliary operations after the blow-moulding operation not otherwise provided for
- B29C49/4278—Cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7162—Boxes, cartons, cases
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
本发明为一种硬壳旅行箱体的制法，包含：一型坯制备步骤：制备出一型胚；一吹气成型步骤：对该型胚进行吹气加工，使该型坯成型为一中空状的硬壳旅行箱体，且该硬壳旅行箱体具有一切割线，使该硬壳旅行箱体划分为第一外壳及第二外壳；一切割步骤：沿着该硬壳旅行箱体的切割线进行切割加工，使该硬壳旅行箱体的第一外壳及第二外壳相互分离。据此，本发明主要以吹气成型制法搭配切割步骤制成，以降低该硬壳旅行箱体的制作成本，同时提高使用寿命以及提升产品竞争力。
The present invention is a method for manufacturing a hard shell travel case, comprising: a preform preparation step: preparing a preform; a blow molding step: blowing the preform to form the preform into a hollow hard shell travel case, and the hard shell travel case has a cutting line to divide the hard shell travel case into a first shell and a second shell; a cutting step: cutting along the cutting line of the hard shell travel case to separate the first shell and the second shell of the hard shell travel case from each other. Accordingly, the present invention is mainly manufactured by a blow molding method combined with a cutting step to reduce the manufacturing cost of the hard shell travel case, while increasing the service life and enhancing the product competitiveness.
Description
技术领域technical field
本发明是与旅行箱体的制法有关，特别是指一种硬壳旅行箱体的制法。The present invention is related to a method for making a suitcase, in particular to a method for making a hard-shell suitcase.
背景技术Background technique
参阅图1所示，原有的硬壳旅行箱体10，主要是以ABS为原料，并分别射出成型具开口的第一外壳11及第二外壳12，成型后再于该第一外壳11及第二外壳12的间耦接铰链(图上未示)、以及在第一外壳11及第二外壳12的开口之间缝制拉链13，使该第一外壳11及第二外壳12可启闭进行收纳置物。Referring to Fig. 1, the original hard-shell suitcase 10 is mainly made of ABS, and the first shell 11 and the second shell 12 of the opening of the molding tool are injected respectively, and the first shell 11 and the second shell 12 are formed after molding. The inter-coupling hinge (not shown) of the second shell 12 and the zipper 13 are sewn between the openings of the first shell 11 and the second shell 12, so that the first shell 11 and the second shell 12 can be opened and closed Carry out storage.
然而，由于目前的硬壳旅行箱体10主要是由吸塑或射出成型制法所制成，且该第一外壳11与第二外壳12的造型不同，因此，必须制备两种不同型态的吸塑或射出成型模具才能完成硬壳旅行箱体10的制作，如此，将提高硬壳旅行箱体10的制作成本。However, since the current hard-shell suitcase 10 is mainly made by blister or injection molding, and the shapes of the first shell 11 and the second shell 12 are different, two different types of suitcases must be prepared. Blister or injection molding mold just can complete the making of hard shell suitcase 10, like this, will improve the manufacture cost of hard shell suitcase 10.
除此之外，当该硬壳旅行箱体10藉由吸塑或射出成型制法制成时，将使硬壳旅行箱体10的拉伸、冲击、弯曲与环境等各种应变的性能较低，不具有较好的使用性能，也就是会导致硬壳旅行箱体10应力分布不均匀，进而影响硬壳旅行箱体10的使用寿命。In addition, when the hard-shell suitcase 10 is made by blister or injection molding, the properties of the hard-shell suitcase 10 in terms of tension, impact, bending, and environmental strains will be relatively low. Low, does not have good performance, that is, it will lead to uneven stress distribution of the hard-shell suitcase 10, thereby affecting the service life of the hard-shell suitcase 10.
最后，当该硬壳旅行箱体10藉由吸塑或射出成型制法制成时，因考虑成品脱模的因素，使得该硬壳旅行箱体10的形状无法设计的很复杂，进而影响该硬壳旅行箱的销售竞争力。Finally, when the hard-shell suitcase 10 is made by blister or injection molding, the shape of the hard-shell suitcase 10 cannot be designed to be very complicated due to consideration of the demoulding of the finished product, which will affect the shape of the suitcase. Sales competitiveness of hard-shell suitcases.
因此，如何开发出一种硬壳旅行箱体的制法，其可解决上述的问题，即为本案发明的动机。Therefore, how to develop a method for making a hard-shell suitcase, which can solve the above-mentioned problems, is the motivation of the present invention.
发明内容Contents of the invention
本发明的目的在于提供一种硬壳旅行箱体的制法，其主要以吹气成型制法搭配切割步骤制成，以降低该硬壳旅行箱体的制作成本，同时提高使用寿命以及提升产品竞争力。The object of the present invention is to provide a method for making a hard-shell suitcase, which is mainly made by blow molding with cutting steps, so as to reduce the production cost of the hard-shell suitcase, increase the service life and improve the product. Competitiveness.
为了达成上述目的，依据本发明所提供一种硬壳旅行箱体的制法，包含：一型坯制备步骤：制备出一型胚；一吹气成型步骤：对该型胚进行吹气加工，使该型坯成型为一中空状的硬壳旅行箱体，且该硬壳旅行箱体具有一切割线，使该硬壳旅行箱体划分为第一外壳及第二外壳；一切割步骤：沿着该硬壳旅行箱体的切割线进行切割加工，使该硬壳旅行箱体的第一外壳及第二外壳相互分离。In order to achieve the above object, according to the present invention, a method for making a hard-shell suitcase body includes: a parison preparation step: preparing a parison; a blow molding step: blowing the parison, The parison is molded into a hollow hard-shell suitcase, and the hard-shell suitcase has a cutting line, so that the hard-shell suitcase is divided into a first shell and a second shell; a cutting step: along Cutting is carried out along the cutting line of the hard-shell suitcase, so that the first shell and the second shell of the hard-shell suitcase are separated from each other.
较佳地，该型坯制备步骤中的型胚是藉由挤出机将塑料挤出成型。Preferably, the parison in the parison preparation step is formed by extruding plastic through an extruder.
较佳地，该型坯制备步骤中的型胚是藉由注塑机将塑料注射成型。Preferably, the parison in the parison preparation step is injection-molded with plastic by means of an injection molding machine.
较佳地，该型胚为聚乙烯对苯二甲酸酯(Polyethylene Terephthalate，PET)。Preferably, the parison is polyethylene terephthalate (PET).
较佳地，该型胚为聚乙烯(polyethylene,PE)。Preferably, the parison is polyethylene (polyethylene, PE).
较佳地，该吹气成型步骤中是先将该型胚置于具有一吹气模穴的吹气模具中，随后对该型胚进行吹气加工，使该型胚膨胀并贴抵在吹气模穴的壁面，紧接着脱模，以形成中空状的该硬壳旅行箱体。Preferably, in the blow molding step, the parison is first placed in a blow mold with a blow mold cavity, and then the parison is blown to make the parison expand and stick against the blow mold. The wall surface of the air mold cavity is then demoulded to form the hollow hard-shell suitcase.
较佳地，该吹气成型步骤中所成型的中空状该硬壳旅行箱体，其中该第二壳体具有一供轮子单元组设的底部。Preferably, the hollow hard shell suitcase formed in the blow molding step, wherein the second shell has a bottom for the wheel unit to be assembled.
有关本发明为达成上述目的，所采用的技术、手段及其他的功效，兹举一较佳可行实施例并配合图式详细说明如后。Regarding the technology, means and other effects adopted in order to achieve the above-mentioned purpose in the present invention, a preferred feasible embodiment is given and described in detail in conjunction with the drawings as follows.
附图说明Description of drawings
图1是显示原有的硬壳旅行箱体的侧视图。Figure 1 is a side view showing a conventional hard shell travel case.
图2是本发明实施例的步骤流程图。Fig. 2 is a flow chart of the steps of the embodiment of the present invention.
图3是本发明实施例的侧视图，显示型坯制备步骤的状态。Fig. 3 is a side view of an embodiment of the present invention, showing the state of a parison preparation step.
图4是本发明实施例的侧视图，显示吹气成型步骤中合模前的状态。Fig. 4 is a side view of an embodiment of the present invention, showing the state before mold closing in the blow molding step.
图5是本发明实施例的侧视图，显示吹气成型步骤中合模后的状态。Fig. 5 is a side view of an embodiment of the present invention, showing the state after mold clamping in the blow molding step.
图6是本发明实施例的侧视图，显示吹气成型步骤中吹气加工后的状态。Fig. 6 is a side view of an embodiment of the present invention, showing the state after blowing in the blow molding step.
图7是本发明实施例的侧视图，显示吹气成型步骤中开模后的状态。Fig. 7 is a side view of an embodiment of the present invention, showing the state after mold opening in the blow molding step.
图8是本发明实施例的侧视图，显示切割步骤的状态。Fig. 8 is a side view of the embodiment of the present invention, showing the state of the cutting step.
图9是本发明实施例的侧视图，显示第二外壳组设有轮子的状态。Fig. 9 is a side view of the embodiment of the present invention, showing the state that the second housing group is provided with wheels.
图10是本发明实施例的侧视图，显示切割线成形的状态。Fig. 10 is a side view of an embodiment of the present invention, showing a state in which a cutting line is formed.
图11是本发明实施例的侧视图，显示切割线成形的另一种状态。Fig. 11 is a side view of the embodiment of the present invention, showing another state of cutting line forming.
图中附图标记说明：Explanation of the reference signs in the figure:
硬壳旅行箱体10 第一外壳11Hard shell travel case 10 first shell 11
第二外壳12 拉链13Second shell 12 Zipper 13
型坯制备步骤21 吹气成型步骤22Parison preparation step 21 Blow molding step 22
切割步骤23 型胚30Cutting step 23 Parison 30
硬壳旅行箱体40 切割线41Hard shell travel case40 Cutting line41
第一外壳42 第二外壳43First shell 42 Second shell 43
底部431 吹气模具50Bottom 431 Blow mold 50
吹气模穴51 轮子单元60Blow cavity 51 Wheel unit 60
拉杆单元70Tie rod unit 70
具体实施方式detailed description
参阅图2所示，本发明实施例所提供的一种硬壳旅行箱体的制法，其主要是由一型坯制备步骤21、一吹气成型步骤22、及一切割步骤23所共同组成，其中：Referring to Fig. 2, a method for making a hard-shell suitcase provided by the embodiment of the present invention is mainly composed of a parison preparation step 21, a blow molding step 22, and a cutting step 23. ,in:
该型坯制备步骤21：参阅图3所示，制备出一型胚30；本实施例中，该型胚30是藉由挤出机将塑料挤出成型，当然该型胚30也可以是藉由注塑机将塑料注射成型，但不以此为限。该型胚30为聚乙烯对苯二甲酸酯(Polyethylene Terephthalate，PET)，当然该型胚30也可以是为聚乙烯(polyethylene,PE)，但不以此为限。The parison preparation step 21: referring to FIG. 3, a parison 30 is prepared; The plastic is injection molded by an injection molding machine, but not limited thereto. The parison 30 is polyethylene terephthalate (PET), of course, the parison 30 may also be polyethylene (PE), but not limited thereto.
该吹气成型步骤22：参阅图4至图7所示，对该型胚30进行吹气加工，使该型坯30成型为一中空状的硬壳旅行箱体40，且该硬壳旅行箱体40具有一切割线41，使该硬壳旅行箱体40划分为第一外壳42及第二外壳43；本实施例中，该吹气成型步骤22是先将该型胚30置于具有一吹气模穴51的吹气模具50中，随后对该型胚30进行吹气加工，使该型胚30膨胀并贴抵在吹气模穴51的壁面，紧接着脱模，以形成中空状的该硬壳旅行箱体40。另外，如图9所示，该吹气成型步骤22中所成型的中空状该硬壳旅行箱体40，其中该第二壳体43具有一供轮子单元60组设的底部431。也就是该第二壳体43具有一体成型的底部431，且该底部431是供各轮子单元60所组设，而第一壳体42不供轮子单元60组设，以提升各该轮子单元60组装的便利性。其次，该第二壳体43同时可供拉杆单元70设置。其次，参阅图10所示，该切割线41的成形可由该硬壳旅行箱体40顶端中央处至左侧接近底端处，以形成不同型态的第一外壳42及第二外壳43。也可如图11所示，该切割线41的成形可由该硬壳旅行箱体40顶端中央处至底端中央处，以形成另一种型态的第一外壳42及第二外壳43。The blow molding step 22: referring to Fig. 4 to Fig. 7, blowing process is performed on the parison 30, so that the parison 30 is formed into a hollow hard-shell suitcase body 40, and the hard-shell suitcase The body 40 has a cutting line 41, so that the hard shell suitcase body 40 is divided into a first shell 42 and a second shell 43; in this embodiment, the blow molding step 22 is to place the parison 30 with a In the blowing mold 50 of the blowing mold cavity 51, the parison 30 is then subjected to blowing processing, so that the parison 30 is expanded and attached to the wall surface of the blowing mold cavity 51, and then demolded to form a hollow shape. The hard shell travel case 40. In addition, as shown in FIG. 9 , the hollow hard-shell suitcase 40 formed in the blow molding step 22 , wherein the second shell 43 has a bottom 431 for the wheel unit 60 to be assembled. That is, the second housing 43 has an integrally formed bottom 431, and the bottom 431 is for the assembly of the wheel units 60, while the first housing 42 is not for the assembly of the wheel units 60, so as to lift each of the wheel units 60. Ease of assembly. Secondly, the second housing 43 can be provided for the tie rod unit 70 at the same time. Next, referring to FIG. 10 , the cutting line 41 can be formed from the center of the top of the hard-shell suitcase 40 to the left near the bottom to form different types of the first shell 42 and the second shell 43 . As shown in FIG. 11 , the cutting line 41 can be formed from the center of the top end of the hard-shell suitcase 40 to the center of the bottom end to form another type of first shell 42 and second shell 43 .
该切割步骤23：参阅图7、8所示，沿着该硬壳旅行箱体40的切割线41进行切割加工，使该硬壳旅行箱体40的第一外壳42及第二外壳43相互分离。The cutting step 23: referring to FIGS. 7 and 8, cutting along the cutting line 41 of the hard-shell travel case 40, so that the first shell 42 and the second shell 43 of the hard-shell travel case 40 are separated from each other. .
以上所述即为本发明实施例各主要步骤的说明。透过本发明实施例的硬壳旅行箱体制法至少具有下述功效：The above is the description of the main steps of the embodiment of the present invention. The hard shell suitcase body method through the embodiment of the present invention has at least the following effects:
其一、由于该硬壳旅行箱体40是由型坯制备步骤21、吹气成型步骤22、及切割步骤23所共同组成，因此，在制作过程中仅需一副吹气模具50即可完成，相较于已知采用吸塑或射出成型方法需要两副模具而言，具有降低该硬壳旅行箱体40的制作成本的功效。First, since the hard-shell suitcase 40 is composed of the parison preparation step 21, the blow molding step 22, and the cutting step 23, only one blow mold 50 is needed to complete the process. Compared with the known method of blister or injection molding that requires two sets of molds, it has the effect of reducing the production cost of the hard-shell travel case 40 .
其二、由于该硬壳旅行箱体40主要是由吹气成型步骤22所完成，因此，该型坯30是在较低压力下所吹胀，使得该硬壳旅行箱体40的残余应力较小，耐拉伸、冲击、弯曲与环境等各种应变的性能较高，具有较好的使用性能，进而提升硬壳旅行箱体40的使用寿命。Its two, because this hard-shell suitcase body 40 is mainly finished by blow molding step 22, therefore, this parison 30 is under the lower pressure that blows, makes the residual stress of this hard-shell suitcase body 40 relatively. Small, high resistance to various strains such as stretching, impact, bending, and environment, and has good performance, thereby improving the service life of the hard-shell travel case 40 .
其三、由于该硬壳旅行箱体40主要是由吹气成型步骤22所完成，因此，所需的吹气模具50皆为母模，也因此考虑脱模的因素较小，制作出的造型或纹路可以较为复杂，以提升该硬壳旅行箱体40的新颖性，进而增加该硬壳旅行箱的销售竞争力。Its three, because this hard-shell suitcase body 40 is mainly completed by the blow molding step 22, therefore, the required blow mold 50 is all master molds, and therefore the factor of demoulding is considered to be small, and the shape produced Or the texture can be more complex, so as to enhance the novelty of the hard-shell suitcase 40, thereby increasing the sales competitiveness of the hard-shell suitcase.
综上所述，上述各实施例及图式仅为本发明的较佳实施例而已，当不能以之限定本发明实施的范围，举凡依本发明申请专利范围所作的均等变化与修饰，皆应属本发明专利涵盖的范围内。In summary, the above-mentioned embodiments and drawings are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, and all equivalent changes and modifications made according to the patent scope of the present invention should be It belongs to the scope covered by the patent of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610300492.5A CN107351360A (en) | 2016-05-09 | 2016-05-09 | Method for making hard-shell travel box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610300492.5A CN107351360A (en) | 2016-05-09 | 2016-05-09 | Method for making hard-shell travel box |
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| CN107351360A true CN107351360A (en) | 2017-11-17 |
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| CN201610300492.5A Pending CN107351360A (en) | 2016-05-09 | 2016-05-09 | Method for making hard-shell travel box |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109955460A (en) * | 2017-12-26 | 2019-07-02 | 八乐梦医用床有限公司 | Cover manufacturing method, molded product, and mold for molding |
| CN118003603A (en) * | 2024-04-09 | 2024-05-10 | 美律科技（福建）有限公司 | A side-opening lid container with wheels and a pull rod using an extrusion blow molding process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3292749A (en) * | 1963-10-24 | 1966-12-20 | Robert J Reading | Plastic cases |
-
2016
- 2016-05-09 CN CN201610300492.5A patent/CN107351360A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3292749A (en) * | 1963-10-24 | 1966-12-20 | Robert J Reading | Plastic cases |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109955460A (en) * | 2017-12-26 | 2019-07-02 | 八乐梦医用床有限公司 | Cover manufacturing method, molded product, and mold for molding |
| CN118003603A (en) * | 2024-04-09 | 2024-05-10 | 美律科技（福建）有限公司 | A side-opening lid container with wheels and a pull rod using an extrusion blow molding process |
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