Ultra-high heat sealing strength BOPP thin film

An ultra-high heat, film technology, used in flexible coverings, packaging, layered products, etc., can solve the high requirements of environmental protection, reduce production costs, and remain high production costs.

Inactive Publication Date: 2008-07-09
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]Aiming at the problem that the traditional food and drug composite packaging film cannot meet the high requirements of today's society for environmental protection, and the production cost remains high
The purpose of the present invention is to provide a new type of BOPP film with ultra-high heat-sealing strength. The heat-sealing strength is 5-12N / 15mm, which can meet the heat-sealing requirements of packaging without compounding with PE or CPP, and can be directly used for bag making. It is used in the packaging of food and medicine, replacing the composite packaging materials currently used in some food and medicine, greatly reducing production costs and solving the environmental protection problems of traditional composite packaging films

Method used

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  • Ultra-high heat sealing strength BOPP thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: adopt co-extrusion process to produce 35 micron BOPP film, wherein in 1 surface layer of BOPP film, be added with 85% ternary copolymerized polypropylene, 13% with LDPE as carrier grafted maleic acid functional group material and 2% silicon-containing Lime and erucamide anti-blocking slippery agent (effective content is 1000PPM), the extruded thickness of this surface layer is 2 microns, forms heat-seal layer 1; 41 dynes, the prepared BOPP film has good heat-sealing performance, and its heat-sealing strength is 9N / 15mm when the heat-sealing temperature is 130°C and the heat-sealing time is 0.3 seconds.

Embodiment 2

[0017] Embodiment two: adopt co-extrusion process to produce 35 micron BOPP film, wherein all add 85% ternary copolymerized polypropylene, 13% grafting maleic acid functional group material and 2% mustard with LDPE as carrier in the two surface layers of BOPP film Acid amide anti-blocking slip agent (effective content is 1000PPM), the extruded thickness of the two surface layers is 3 microns, forming heat-sealing layer 3 and heat-sealing layer 4, and corona treatment is carried out on the two heat-sealing layers, and the treatment is done on the same day The value is 41 dynes, and the pattern required by the customer is printed on the surface of any heat-sealing layer, and a modified polyvinyl alcohol (PVOH) coating is coated on the printed surface. The prepared BOPP film has excellent heat-sealing performance and ultra-high oxygen barrier performance. When the heat-sealing temperature is 130°C and the heat-sealing time is 0.3 seconds, its heat-sealing strength is 11N / 15mm; whe...

Embodiment 3

[0018] Embodiment three: adopt co-extrusion process to produce 35 micron BOPP film, wherein in 1 surface layer of BOPP film, add 25% binary copolymerization polypropylene, 60% ternary copolymerization polypropylene, 13% with LDPE as carrier grafted Malay Acid functional group material and 2% erucamide anti-blocking slippery agent (effective content is 1000PPM), the extruded thickness of this surface layer is 2 microns, forms heat-seal layer 5; Non-heat-seal layer 6 is carried out corona treatment, the same day The treatment value is 41 dynes, and a PVDC coating is applied on the surface of the non-thermal layer 6 . The prepared BOPP film has good heat-sealing performance and oxygen and water vapor barrier performance. When the heat-sealing temperature is 130°C and the heat-sealing time is 0.3 seconds, its heat-sealing strength is 8N / 15mm; when the PVDC. coating is 3um When the relative humidity is 90% and the water vapor transmission rate is ≤4.8g / m at 38°C 2 .24hr; at 0% rel...

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Abstract

An ultra-high thermal sealing strength BOPP film is made through that a thermal sealing layer with ultra-high thermal sealing strength is formed on the surface layer of the BOPP film through a co-extrusion process. The product can be packaged directly in a way of gap joint thermal sealing or relative sealing without being combined with PE or CPP thermal sealing film. The surface can be printed, coated or coated after being printed, etc., according to the requirement. In the product, the packaging is integrated with the decoration, and the product can replace part of compound products, so the product with obvious low cost advantage can reduce pollutions on the environment are reduced.

Description

Technical field [0001] The invention relates to a BOPP film with super high heat sealing strength. This product does not need to be compounded with PE or CPP heat-sealing film, it can be directly packaged by seam-sealing heat-sealing or opposite-sealing packaging, and the surface can be printed, coated or coated after printing, etc. This product integrates packaging and decoration, and can be Replacing partially compounded products has significant low-cost advantages and reduces environmental pollution. Background technique [0002] At present, traditional packaging film materials basically need to be compounded with PE or CPP film with high heat-sealing strength to meet the heat-sealing requirements of packaging when they are applied to food, medicine, etc. The glue, solvent, and curing processes used greatly increase the production cost and cause certain pollution to the environment. It can be seen that the existing technology is no longer in line with the industrial pol...

Claims

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Application Information

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IPC IPC(8): B65D65/40B32B27/08B29C47/06
Inventor 黎坛曾令丰
Owner HAINAN SHINER IND
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