JPH06101104A - Glove made of plastic film - Google Patents

Abstract

PURPOSE:To obtain safe and sanitary gloves, having high softness, piercing resistance, mechanical strength and strength in heat-sealed parts, moderate stiffness and durability, good in touch in wearing and excellent in operating efficiency. CONSTITUTION:This gloves made of a plastic film are obtained by superposing two plastic films composed of 100 pts.wt. ultralow-density ethylene-alpha-olefin copolymer having <=0.91g/ml density, 0.5-3g/10min melt index (MI), >=115 deg.C melting point and <=1200kg/cm<2> 1% modulus, 50-200 pts.wt. long-chain branched type low-density ethylenic polymer having 0.91-0.94g/ml density, 1-10g/10min MI and >=5.0 (Mw/Mn) and 50-500 pts.wt. short-chain branched type straight-chain low-density ethylene-alpha-olefin copolymer having 0.910-0.935g/ml density and 0.5-5g/10min MI, thermally fusing the outer periphery thereof according to the shape of hands and providing the wrist parts with openings.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an easy-to-manufacture yet excellent-performance plastic film glove, and more particularly to kitchens, factories, wedding halls, hotels, hospitals, painting sites, laboratories, and foodstuffs. The present invention relates to a plastic film glove manufactured from a specific polyethylene resin composition that can be easily used in various places such as shops and is disposable.

[0002]

2. Description of the Related Art Conventionally, as a disposable plastic film glove, two sheets of vinyl chloride film, low-pressure polyethylene film of high-pressure method or ethylene-vinyl acetate copolymer film, etc. are superposed, and the outer periphery is heat-sealed according to the handprint. However, because the price is low and it is easy to use,
Mainly used. However, since PVC film contains chlorine, it pollutes the environment when incinerated, and the high-pressure low-density polyethylene film has low heat-sealing strength, is easily broken when force is applied to the welded part, lacks flexibility, and ethylene- Similarly, the vinyl acetate copolymer film has problems such as insufficient heat seal strength, blocking property, poor mouth opening of the wrist portion during use, odor, and high cost. Therefore, the inventors of the present invention have solved the above problems of the conventional plastic film gloves by using the density 0.
A glove made of a film made of a linear ethylene-α-olefin copolymer of 91 g / ml or less has been proposed (Japanese Patent Laid-Open No. 3-269103), and a considerable effect can be obtained in terms of improving heat seal strength. It was However, the film made of the above-mentioned linear ethylene-α-olefin copolymer is poor in film-forming, and the glove made from this film has a little stiffness of the film, and the handle and the handling property of the article are slightly inferior, and the weight is high. The film may be torn when handling objects, and these improvements have been desired.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a raw film for producing gloves which is excellent in film-forming property, and the produced film of the gloves has an appropriate elasticity and is easy to attach and detach,
Moreover, it is easy to handle items with gloves on,
An object of the present invention is to provide a glove that does not break even when handling a heavy object, has high strength at the heat-sealed portion on the outer periphery of the glove, does not generate toxic gas when incinerated, and is hygienic and low in cost.

[0004]

[Means for Solving the Problems] The present inventors have retained the excellent properties of the above-mentioned linear ethylene-α-olefin copolymer having a density of 0.91 g / ml or less as a material for plastic film gloves. At the same time, in order to solve the above-mentioned drawbacks of the raw material, a number of experiments were conducted by combining the copolymer with other ethylene-based polymers, and three specific ethylene-based polymers were obtained. The inventors have found that the above problems can be solved by a combination of the above and completed the present invention.

That is, the present invention has a density of 0.91 g / ml or less, a melt index of 0.5 to 3 g / 10 minutes, a melting point of 115 ° C. or more, and a 1% modulus of 1200 kg / cm ² or less, which are produced by a vapor phase low pressure method. Ultra low density ethylene-α
100 parts by weight of olefin copolymer, density 0.91 to 0.94 g / ml produced by high pressure radical polymerization method, melt index 1 to 10 g / 10 minutes, number average molecular weight (M
Ratio (Mw / M) of weight average molecular weight (Mw) to n)
n) 5.0 or more long-chain branched low-density ethylene polymer 5
0 to 200 parts by weight and density 0.910 to 0.935 g
/ Ml, a short-chain branched linear low-density ethylene-α-olefin copolymer having a melt index of 0.5 to 5 g / 10 min. 2 plastic films produced from a resin composition consisting of 50 to 500 parts by weight. TECHNICAL FIELD The present invention relates to a plastic film glove that is superposed and heat-welded on the outer periphery according to a handprint and has a wrist portion as an open mouth.

In the present invention, the ultra-low density ethylene-α-olefin copolymer (hereinafter, also referred to as VLDPE) belongs to the present inventors and has a technical tie-up with Nippon Unicar Co., Ltd., the applicant of the present application. It is a special polyethylene resin developed by Union Garbide Chemical and Plastics Company in the United States, which is completely different from conventional polyethylene resins. This VLDPE can be produced, for example, according to the following method A or B. Method A (continuous production method) In a fluidized bed reaction zone, a temperature of 10 to 80 ° C. and 7,000 K
At a pressure of Pa or lower, (a) a higher α-olefin: ethylene molar ratio of 0.35: 1 to 8.0: 1, ethylene and at least one higher α having 3 to 12 carbon atoms.
-Olefin, (b) 33-95 mol% of at least 1
A gas mixture containing one species of diluent gas and (c) 0.1-10 mol% of at least one diene is represented by the formula I: Mg _m Ti (OR) _n X _p [ED] _q (I) ( In the formula, R represents an aliphatic or aromatic hydrocarbon group having 1 to 14 carbon atoms or a group COR ′, R ′ represents an aliphatic or aromatic hydrocarbon group having 1 to 14 carbon atoms,
X is selected from the group consisting of chlorine atom, bromine atom, iodine atom and mixtures thereof, and ED is selected from the group consisting of alkyl esters of aliphatic or aromatic acids, aliphatic ethers, cyclic ethers and aliphatic ketones. Represents an organic electron-donating compound, m is 0.5 to 56, n is 0,
1 or 2, p is 2 to 116, and q is 2 to 8
5) is continuously contacted with particles of a catalyst system consisting of a precursor composition, said precursor composition being diluted with an inert carrier material and having the following formula II: Al (R ″) _{d X'e} H _f (II) (In the formula, X'represents a chlorine atom or a group OR "', and R"
And R ″ ′ each independently represent a saturated hydrocarbon group having 1 to 14 carbon atoms, e is 0 to 1.5, f is 0 or 1, and d + e + f = 3). A complete activation with an organoaluminum compound, provided that the total aluminum: titanium molar ratio in the reaction zone is from 10: 1 to 400: 1. Further details regarding this are described in Japanese Examined Patent Publication No. 62-44004. Method B Ethylene and at least one α-olefin having 3 to 12 carbon atoms in the gas phase at a temperature of about 10 ° C to about 115 ° C. (A) (1) Vanadium trihalide (a) with chlorine, bromine or iodine, and an electron donor (b) which is a liquid organic Lewis base in which the vanadium trihalide is soluble
A vanadium compound which is a reaction product of (2)
III: MX _a (III) (In the formula, M represents a boron atom or a group AlR _(3-a) ,
Each R represents an alkyl group, provided that
Also in the group, the total number of carbon atoms does not exceed 14, X represents a chlorine atom, bromine atom or iodine atom, a is 0, 1 or 2, provided that when M represents a boron atom, a is 3
And a supported precursor consisting essentially of a modifier represented by the formula: and a solid inert carrier substantially composed of silica or alumina, and (B) the following formula IV: AlR ₃ (IV) (wherein R represents the same meaning as defined in formula III), and (C) the following formula V: R ¹ _b CX ¹ _(4-b) (V) ( In the formula, R ¹ represents a hydrogen atom or an unsubstituted or halogen-substituted lower alkyl group, X ¹ represents a halogen atom, and b is 0, 1 or 2.). A method of contacting with a catalyst composition. Details of this method are described in JP-B-62-57642. In the present invention, the melt index of VLDPE is 0.5 to
It is 3 g / 10 minutes, and if it is less than 0.5 g / 10 minutes, the workability of the raw material film is deteriorated, and if it exceeds 3 g / 10 minutes, the mechanical strength of the raw material film is lowered, which is not desirable. VL
The melting point of DPE is 115 ° C. or higher, and if it is lower than this range, mechanical strength, heat resistance, and heat seal strength become low, which is not desirable. Also, the 1% modulus of VLDPE is 120.
It is 0 kg / cm ² or less, and if it exceeds this, the flexibility of the glove is lost, and the feel when wearing the glove deteriorates,
Workability is worse when wearing gloves.

In the present invention, a long-chain branched low-density ethylene polymer (hereinafter, also referred to as LDPE) means ethylene alone or a catalyst such as oxygen or peroxide obtained by adding vinyl acetate or ethyl acrylate to ethylene. Polyethylene obtained by radical polymerization in a tubular reactor or a tank reactor in the presence of 1000 to 3000 atm and a temperature of 150 to 300 ° C., whereas other polyethylene has only short chain branching. It is distinguished from other polyethylenes in that it has both and long chain branching. The density of LDPE used in the present invention is 0.
It is 91 to 0.94 g / ml, and if it is less than 0.91 g / ml, the mechanical strength and heat seal strength of the glove decrease,
If it exceeds 0.94 g / ml, it is not desirable because it lacks flexibility. When LDPE is an ethylene homopolymer, the density is preferably 0.93 g / ml or less. Moreover, the melt index of LDPE is 1 to 10 g.
/ 10 minutes, and if it is less than 1 g / 10 minutes, the workability of the raw film of the film is deteriorated, and if it exceeds 10 g / 10 minutes, the mechanical strength and heat seal strength of the glove are undesirably lowered. Furthermore, the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of LDPE is 5.0 or more, and when it is less than 5, the processability of the raw material film is deteriorated, which is not desirable.

The short-chain branched long-chain low-density ethylene-α-olefin copolymer (hereinafter, also referred to as LLDPE) in the present invention is a known method, that is, a transition metal compound (for example, titanium or vanadium) as a main catalyst. Ethylene) and α-olefin in the presence of a Ziegler catalyst composed of an organometallic compound (eg, organoaluminum) as a cocatalyst, a carrier (oxide of silicon, titanium, magnesium, etc.), a chromium-based catalyst, etc. Obtained by polymerizing under medium or low pressure. Propylene, butene-1, hexene-1, octene-1, decene-1 and the like are preferable as the α-olefin. Further, the polymerization is a slurry polymerization,
It is carried out by various methods such as gas phase polymerization and high temperature dissolution polymerization. The density of LLDPE used in the present invention is 0.
910 to 0.935 g / ml, 0.910 g / m
If it is less than 1, the mechanical strength of the glove is low, and the feel and workability when wearing the glove are deteriorated, which is not desirable.
If it exceeds / ml, the flexibility is lost and the feel and workability when wearing gloves are deteriorated, which is not desirable. The melt index of LLDPE is 0.5 to 5 g / 10 minutes,
If it is less than 0.5 g / 10 min, the workability of the raw film of the film is deteriorated, and if it exceeds 5 g / 10 min, the mechanical strength of the glove is lowered, which is not desirable.

In the present invention, LDPE is 50 to 200 parts by weight, and LLD is 100 parts by weight of VLDPE.
A raw film film is produced from a resin composition containing 50 to 500 parts by weight of PE. If the blending amount of LDPE is less than 50 parts by weight, slicing may occur when the film original fabric is manufactured by the inflation method or the T die casting method,
The productivity lowers undesirably, and when the amount exceeds 200 parts by weight, the flexibility, mechanical strength and heat seal strength of the glove are lost, which is not desirable. Also, the amount of LLDPE blended is 5
If the amount is less than 0 parts by weight, the glove loses its stiffness, it is difficult to put it on the hand, the work cannot be performed quickly with the glove worn, and the mechanical strength of the glove decreases, so It is not desirable because it will rupture and the heat seal will become weaker. When the blending amount of LLDPE exceeds 500 parts by weight, the flexibility of the glove is lost, and the feel and workability when wearing the glove are deteriorated, which is not desirable.

The resin composition for producing the glove of the present invention includes the above VLDPE, LDPE and LLDP.
In addition to E, conventional additives such as antioxidants, antistatic agents, colorants and the like may be further added.

The glove of the present invention is produced from an original film of a film made of the above resin composition. The original film can be produced by an inflation tubular film production method or a T die casting method, and if necessary. Emboss one or both sides of the film. The thickness of the film is preferably 10 to 200 μm, particularly 20 to 100 μm.
Is. This is because if the thickness is less than 10 μm, the film is easily broken, and if it exceeds 200 μm, workability is deteriorated and the manufacturing cost is increased. The embossing is performed by pressing a film between a chill roll having an appropriate surface roughness and a pressure roll and applying the pressure to one side or both sides of the film. By embossing, not only the appearance of the film becomes beautiful and the commercial value is improved, but also when used as gloves, it is easy to grab an object due to the unevenness of the surface, and it also has the effect of preventing the blocking of film fellows. . Types of embossing include turtle shell, lattice,
There are silk, diamonds, jade, hemp, satin, splash, etc., all of which are effective, but the embossing depth (JIS B
(Measured according to 0601) is 2 to 300 μm, preferably 5 to 200 μm. This is because if it is less than 2 μm, the above-mentioned effect is not exhibited, and if it exceeds 300 μm, the heat-sealing property is deteriorated and the appearance is also rough, which is not desirable.

The plastic film glove of the present invention is manufactured as follows: As described above, the film is manufactured by the inflation method or the T-die method, and its surface is embossed if necessary. Next, after stacking the two films, the outer periphery of the handprint is heat-sealed and heat-welded, and the outside of the heat-welded portion is cut to obtain a glove. Here, so-called thermal fusing may be performed, in which thermal welding and cutting are performed at the same time. It should be noted that the wrist portion may be left in advance and heat-welded to form the open mouth, but the entire periphery of the hand shape may be heat-welded and cut with scissors at the time of use to form the open mouth.

[0013]

The present invention will be described in more detail with reference to the following examples, which should not be construed as limiting the invention thereto. Example 1 Ultra low density ethylene-α having a density of 0.906 g / ml, a melt index of 0.8 g / 10 minutes, a melting point of 117 ° C., and a 1% modulus of 1170 kg / cm ² produced by a gas phase low pressure method.
-Olefin copolymer (VLDPE) 100 parts by weight, density 0.917 g / ml produced by high pressure radical polymerization method,
Melt index 2g / 10min, Mw / Mn (Q value)
= 7 long chain branched low density ethylene polymer (LDPE)
100 parts by weight, density 0.925 g / ml, melt index 2.3 g / 10 min, short chain branched linear low-density ethylene-hexene-1 copolymer 300 parts by weight, phosphorus antioxidant 2 parts by weight and A resin composition obtained by uniformly mixing 3 parts by weight of the antistatic agent was used to obtain a thickness of 7 by T-die casting.
A film of 0 μm was produced, and two sheets were superposed on each other, and then the outer peripheral portion of the handprint was heat-welded with a width of 2 mm, leaving the wrist portion, and the outside was cut with scissors to produce 100 plastic film gloves. . When this was used to perform dish washing for 1 hour, breakage of the heat-sealed portion due to heat sealing did not occur in all 100 sheets. Also, this glove has a rubber-like feel, and since the feeling of the hand is transmitted to the work-contrast plate as it is, an accident such as dropping and breaking the plate is 1
No incident occurred. In addition, the protrusions were not broken. Furthermore, when the wrist part of the above-mentioned glove (the parallel part at 5 cm from the lowermost end of the glove) was vertically stretched in parallel with 1 cm, the part was constricted and the diameter became smaller. The part was in close contact with the wrist, and the wrist was weakly tightened. Therefore, the state is the same as when a rubber ring is attached to the wrist portion, and it is confirmed that the gloves do not slip out of the hand during the work and the work efficiency is improved.

Example 2 A film similar to that of Example 1 was prepared, with 200
A glove was manufactured by performing the same operation as in Example 1 except that embossing with an embossing depth of μm was performed, and the same test was performed. In this embodiment, since the surface is embossed, the workability is further improved as compared with the first embodiment, and
Even after washing the dishes for an hour, there was no accident to break the dishes.

Example 3 A film similar to that of Example 1 was prepared and 100
A glove was manufactured by performing the same operation as in Example 1 except that embossing with an embossing depth of μm was performed, and the same test was performed. Since embossing is applied to both sides in this example, the feel of the inner surface of the glove with the hand is improved, the workability is further improved, and the dishes are washed for 3 hours as compared with those in Examples 1 and 2. No accident to break the plate occurred.

Example 4 A film similar to that of Example 1 was produced, and the inner surface of the film was coated with 20
Except for embossing with an embossing depth of 0 μm,
A glove was manufactured in the same manner as in Example 1, and the same test was performed. In this example, since the inner surface was embossed, it was easy to put in and take out the hand, the touch was good, and a soft feeling as a glove was obtained. Moreover, the workability is good, and 1
Even after washing the dishes for an hour, there was no accident to break the dishes.

Comparative Example 1 LD in 100 parts by weight of VLDPE in Example 1
An experiment similar to that of Example 1 was carried out except that the amount of PE was changed to 30 parts by weight. The productivity of the raw material film was poor, and the surface of the film was extremely rough, so that it could be used as a raw material for gloves. There was no sex.

Comparative Example 2 LD in Example 1 with respect to 100 parts by weight of VLDPE
An experiment similar to that of Example 1 was carried out except that the amount of PE was changed to 250 parts by weight, and the productivity of the raw film of the film was improved, but the flexibility of the glove was lost and the strength of the heat-sealed part was improved. And the performance was inferior to the glove of Example 1.

Comparative Example 3 LL for 100 parts by weight of VLDPE in Example 1
The same experiment as in Example 1 was carried out except that the content of DPE was changed to 30 parts by weight. As a result, the mechanical strength and heat seal strength of the glove decreased, the glove broke during the work, and And the work was not performed smoothly with the hands put or gloves were put on, and the performance was inferior to that of the gloves of Example 1.

Comparative Example 4 LL for 100 parts by weight of VLDPE in Example 1
Example 1 except that the blending amount of DPE was changed to 600 parts by weight.
When the same experiment was performed, the mechanical strength of the glove was improved, but the glove was stiff, had a bad feel, and lost flexibility. Further, the work was inferior to the glove of Example 1 in that when the work with the gloved work was performed, the object could not be accurately grasped and dropped, resulting in lower work efficiency.

[0021]

EFFECT OF THE INVENTION The plastic film glove of the present invention has an ultra-low density ethylene-α-olefin copolymer having a performance close to that of rubber and a performance that contributes to the improvement of the productivity of the original film and the film-forming property. A long-chain branched low-density ethylene-based polymer having and a short-chain branched linear low-density ethylene-α-olefin copolymer which enhances mechanical strength and heat-sealing strength and gives the film an appropriate rigidity, Since it is manufactured from a film original fabric made of a resin composition blended in a ratio capable of exhibiting the respective characteristics, it also has the above-mentioned excellent characteristics. That is, the glove of the present invention has a good feel when attached to a glove, is flexible, and has a proper waist in the film as compared with a conventional glove made of a plastic film. It has very good workability, is less likely to cause an accident, can be removed and attached smoothly, and has the mechanical strength and puncture resistance of gloves.
Since the heat seal strength is strong, it is difficult to tear even when working for a long time or when handling heavy objects. For this reason, this glove is very economical, and since the labor of replacing the glove can be saved, the cost can be reduced, and the chances of pollutants and dangerous substances coming into direct contact with the hands can be reduced, and safety of the gloves can be improved. It also contributes to improvement. In addition, the gloves of the present invention include oil, acid,
It is strong against alkali, and all the materials used are safe as it has passed the Food Sanitation Law and the Japanese Pharmacy Law, so it is suitable for various work in food, painting, factories, etiology, laboratories, households, etc. Can be used in a wide range.

Claims (2)

[Claims] 1. A density of 0.91 g produced by the vapor phase low pressure method.
/ Ml or less, melt index 0.5 to 3 g / 10
Min, melting point 115 ° C or higher, 1% modulus 1200 kg /
100 parts by weight of an ultra-low density ethylene-α-olefin copolymer having a cm ² or less, a density of 0.91 to 0.94 g / ml produced by a high pressure radical polymerization method, and a melt index of 1
50 to 200 parts by weight of a long-chain branched low-density ethylene polymer having a ratio (Mw / Mn) of 5.0 g or more and a weight average molecular weight (Mw) to a number average molecular weight (Mn) of 10 to 10 minutes, and a density of 0.910. To 0.935 g / ml, melt index 0.5 to 5 g / 10 min, short chain branched linear low density ethylene-α-olefin copolymer 50 to 500 parts by weight of a plastic composition produced from a resin composition Overlap two films and heat weld the outer circumference according to the bill,
Plastic film gloves with an open mouth on the wrist. 2. The plastic film glove according to claim 1, wherein one side or both sides of the film are embossed and the depth thereof is 2 to 300 μm.