Polyvinyl chloride (PVC ) heat shrink label film

A heat-shrinkable, PVC resin technology, applied in the field of PVC heat-shrinkable label films, can solve problems such as the inability to effectively block vitamin C damage, the limited ability of ink to absorb ultraviolet rays, and the juices that are not resistant to ultraviolet rays. , The effect of improving ultraviolet absorption capacity and avoiding degradation damage

Active Publication Date: 2013-03-13
YIXING GUANGHUI PACKAGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] PET bottle and PVC heat-shrinkable label film, good transparency is the advantage of packaging materials, so that the visual effect of the package is good, attracting consumers, and in order to enhance the visual effect, the heat-shrinkable label film outside the bottle adopts a high-transparency design. Beverages such as juices that are resistant to ultraviolet light are a major hidden danger
The only thing that can block part of the ultraviolet rays is the ink printed on the label film, but conventional inks have limited ability to absorb ultraviolet rays and cannot effectively block the damage of ultraviolet rays to vitamin C in the bottled beverage
It is feasible in principle to replace the vitamin C in fruit juice drinks with dark bottles like anti-ultraviolet drug packaging, but due to the loss of visibility, the market does not accept this kind of packaging, and the cost of dark bottles will increase, and Not conducive to unified recycling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Anti-ultraviolet PVC heat-shrinkable label film.

[0018] Formula: 100 parts by weight of SG-5 type PVC resin, 2.0 parts by weight of methyl tin mercaptide 181, 4.5 parts by weight of dioctyl phthalate (DOP), 1.5 parts by weight of processing aid ACR-201, modifier MBS BTA-717 3.2 parts by weight, internal lubricant G-16 0.9 parts by weight, external lubricant AC316A 0.3 parts by weight, 2,4,6-tris(2′-hydroxy-4′-n-butoxyphenyl)-1 , 0.6 parts by weight of 3,5-triazine (triazine-5), 0.6 parts by weight of 2-hydroxy-4-n-octyloxy-benzophenone (UV-531), 0.6 parts by weight of 2-(2′-hydroxy-3 ',5'-di-tert-butyl)benzotriazole (UV-320) 0.4 parts by weight, 2,3,5-dichlorophenyl salicylate 0.5 parts by weight, 2-cyano-3,3-di 0.8 parts by weight of ethyl phenyl acrylate (N-35).

[0019] Preparation: Weigh the material according to the formula, and the process flow: high-speed mixing——cooling and mixing——extruder plasticizing——film blowing head molding——secondary blowin...

Embodiment 2

[0021] Example 2: Anti-ultraviolet PVC heat-shrinkable label film.

[0022] Formula: 100 parts by weight of SG-7 PVC resin, 2.5 parts by weight of methyl tin 191, 5.0 parts by weight of dioctyl terephthalate (DOTP), 2.0 parts by weight of processing aid ACR K-120ND, modifier MBS B521 4.0 parts by weight, internal lubricant G60 1.2 parts by weight, external lubricant G78 0.6 parts by weight, 2-(2'-hydroxy-5'-methylphenyl) benzotriazole (UV-P) 0.6 parts by weight, 2 - 0.8 parts by weight of hydroxy-4-methoxybenzophenone (UV-531), 0.4 parts by weight of p-tert-butylphenyl salicylate (TBS), 2-cyano-3,3-diphenylacrylic acid 0.8 parts by weight of 2-ethylhexyl ester (N-539).

[0023] Preparation: as in Example 1.

[0024] Film properties: film thickness 0.050mm, diameter 780mm, transverse shrinkage rate 50%, longitudinal shrinkage rate 2%, absorbance 0.52 (the maximum value of ultraviolet light absorption at 360~380nm), ultraviolet light (350nm) transmittance 39.2%.

Embodiment 3

[0025] Embodiment 3: Anti-ultraviolet PVC heat-shrinkable label film.

[0026]Formula: 100 parts by weight of SG-5 PVC resin, 1.8 parts by weight of isooctyl dimercaptoacetate di-n-octyltin (DOTTG), 3.0 parts by weight of epoxy soybean oil (ESBO), 1.8 parts by weight of processing aid ACR K-125, Modifier MBS B22 2.8 parts by weight, internal lubricant monoglyceride stearate (GMS) 0.8 parts by weight, external lubricant oxidized polyethylene wax 0.3 parts by weight, 2-(2'-hydroxyl-4'-n-octyloxy phenyl) benzotriazole (UV-510) 1.7 parts by weight, bisphenol A disalicylate (BAD) 0.6 parts by weight, ethyl 2-cyano-3,3-diphenylacrylate (N- 35) 1.2 parts by weight.

[0027] Preparation: as in Example 1.

[0028] Film properties: film thickness 0.050mm, diameter 780mm, transverse shrinkage rate 50%, longitudinal shrinkage rate 2%, absorbance 0.49 (360~380nm ultraviolet light absorption maximum), ultraviolet light (350nm) transmittance 42.7%.

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Abstract

The invention relates to improvement on a PVC heat shrink label film, which is characterized by comprising the following components in part by weight: 100 parts of suspension-process loose PVC resin, 1.8 to 2.5 parts of organic tin stabilizer, 3.0 to 5.0 parts of plasticizer, 1.0 to 2.0 parts of acrylate polymer, 2.0 to 4.0 parts of methyl methacryIate-butadiene-styrene copolymer, 0.8 to 1.2 parts of internal lubricating agent, 0.3 to 0.6 part of external lubricating agent and 2.5 to 3.5 parts of ultraviolet absorbent. The ultraviolet resistance (ultraviolet absorbability) of the prepared PVC heat shrink label film is improved greatly; and practical tests show that the ultraviolet resistance is less than 45 percent and that the maximum 360-to-380-nanometer ultraviolet absorbability (absorbance) of the film is 0.3, and therefore, the degradation and damage of the vitamin C in bottled drink by ultraviolet can be prevented effectively.

Description

technical field [0001] The invention is an improvement to the PVC heat-shrinkable label film, in particular to a PVC heat-shrinkable label film with the function of resisting (absorbing) ultraviolet rays. Background technique [0002] PET bottles have the advantages of good transparency, stable chemical properties, good barrier properties, light weight, low price, and recyclability, and are preferred as bottled beverage packaging. PVC heat-shrinkable label film, also known as PVC heat-shrinkable printing film, is a kind of plastic label film with good shrinkage, transparency and printability. The gloss and shrinkage of the heat-shrinkable label film can make the packaging pattern on the bottled beverage more vivid, realize the 360° label design, and highlight the image on the supermarket shelf. , high-end alcohol products and other main forms of PET bottle trademarks. [0003] The main function of heat-shrinkable labels is product promotion, using visual impact effects to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L33/04C08L51/00C08K5/57C08K5/134C08K5/07C08K5/3475C08K5/315C08K5/3492
Inventor 杨涛陈亚龙于世发殷宇晨钱鑫陈丽娜杭崭东
Owner YIXING GUANGHUI PACKAGE
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