Unlock instant, AI-driven research and patent intelligence for your innovation.

Flexible packaging film laminates and method of making same via thermal lamination

A multi-layer film, adhesive layer technology, applied in packaging, lamination, wrapping paper, etc., can solve problems such as restricting recyclability

Pending Publication Date: 2022-02-25
DOW GLOBAL TECH LLC
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, the use of laminating adhesives allows the packaging to adhere to the ink, limiting recyclability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flexible packaging film laminates and method of making same via thermal lamination
  • Flexible packaging film laminates and method of making same via thermal lamination
  • Flexible packaging film laminates and method of making same via thermal lamination

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0093] Membrane 1 of the present invention is to use A 50 μm monolayer of 21E961 was used to study the adhesion between various substrates or layers, as shown in Table 3. Likewise, comparative films 1 and 2 are 50 μm monolayer films containing Elvaloy AC 1224 and 41E710 with ELITE TM 5400 blend.

[0094] Table 3: Various layers / substrates used to evaluate bond strength

[0095]

[0096] *BOPET film was purchased from Origin (China) Industrial Co., Ltd.

[0097] Inventive Film 1 and Comparative Films 1 and 2 were then sandwiched between the two substrates being evaluated to ensure consistency in evaluating the bond strength between the film and substrate.

[0098] The resulting sandwich structure was passed through a benchtop hot roll laminator (Cheminstruments) at 160 degrees Celsius under 60 PSI pressure. One side of the resulting laminate was peeled off by hand and the bond strength was evaluated. Where corona treatment is used, a corona treatment of 38 dynes is ...

example 2

[0112] To further demonstrate the adhesive performance, a three-side sealed pillow bag structure was fabricated. The size of the pillow bag is 80mm x 80mm, with a 5mm edge seal on only three sides. All pouches were heat sealed using a Jade PFS-600 Impulse Heat Sealer with a temperature knob set to 3. The pouches included the layer structure listed in Table 8 below.

[0113] Table 8: Layer structure of pouches

[0114]

[0115] Inventive pouches and comparative pouch 2 were produced by the experimental thermal lamination process outlined above. Thermal lamination is performed in two steps, coating on the PET layer 21E961 or NUCREL, then coat with ELITE TM 5401G.

[0116] When performing qualitative visual analysis of pouches, due to The bond strength of 31001 to PET was poor (ie only about 0.3N to 0.5N) and the surface of Comparative Sachet 2 had many wrinkles. This poor bond strength leads to delamination, which is evidenced in wrinkled layers. because 21E961 b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Melt indexaaaaaaaaaa
Densityaaaaaaaaaa
Login to View More

Abstract

Multilayer film embodiments are directed to films produced via thermal lamination without adhesive due to the use of tie layers comprising a blend of ethylene acrylate copolymer and an anhydride grafted ethylene alpha-olefin copolymer.

Description

[0001] Cross-references to related applications [0002] This application claims priority from U.S. Provisional Patent Application No. 62 / 867,979, filed on June 28, 2019, the entire disclosure of which is incorporated by reference. Technical field [0003] Embodiments of the present disclosure relate generally to multilayer films, and more specifically to multilayer films and laminates produced without adhesives. Background technique [0004] Multilayer films may include films such as cast films or blown films, which may be suitable for flexible packaging, such as pouches for a variety of consumer products. Conventional laminates used in such applications typically include one or more layers of polyethylene terephthalate (PET) or biaxially oriented polypropylene (BOPP) laminated to a polyethylene sealant substrate . Although such structures are printable, heat-resistant, and able to withstand high-temperature sealing for good seal integrity, such laminates cannot be recyc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B32B27/32B32B27/36B32B27/34B32B15/20B32B15/085B32B15/09B32B15/088B32B7/12B32B37/12B32B37/06B32B37/10B65D65/02B65D65/40B65D65/42
CPCB32B27/32B32B27/36B32B27/34B32B15/20B32B15/085B32B15/09B32B15/088B32B7/12B32B37/1284B32B37/06B32B37/10B65D65/40B65D65/42B65D65/02B32B2439/00B32B15/082B32B27/08B32B27/16B32B27/302B32B27/308B32B2250/03B32B2250/04B32B2250/05B32B2270/00B32B2307/306B32B2307/31B32B2307/406B32B2307/516B32B2307/518B32B2307/75B32B2439/70B32B2255/10B32B2255/205C08L23/0869C08L51/06B32B2250/24B32B2250/40B32B2307/30B32B2307/72C08L2203/16
Inventor W·A·叶E·L·李H·T·泰H·L·吴
Owner DOW GLOBAL TECH LLC