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Flexible pipette lining paper and preparation method thereof

A straw and backing paper technology, applied in the pulp beating method, paper, papermaking, etc., can solve the problems of not being easy to bend, not conforming to usage habits, etc., and achieve the effects of blocking liquid penetration, good water resistance and wet strength

Active Publication Date: 2019-06-21
浙江恒川新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the weakness of the softness of the paper itself and the difficulty of forming a paper on the over-thick paper at one time, the paper straw is generally made of multi-layer composite pressing of the straw backing paper and the straw face paper. The prepared straw has good stiffness but is not easy Curved, not in line with people's daily habits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] A preparation method for a bendable straw backing paper, comprising the following steps:

[0024] Step 1, disintegrating 20-30% of the mass fraction of bleached coniferous wood chemical pulp, 20-30% of bleached broad-leaved wood chemical pulp, and 40-60% of bleached kraft hemp pulp into mass concentrations of 4-6 % of slurry;

[0025] The bleached hemp pulp is one or more of ramie pulp, hemp pulp, flax pulp, manila hemp pulp, sisal pulp, jute pulp, kenaf pulp, leather pulp, sandalwood pulp and goose pulp;

[0026] Step 2, the three kinds of slurries that have been disintegrated are beaten by a refiner respectively to obtain coniferous wood pulp with a beating degree of 35-38°SR and a wet weight of 8.5-10.0g, and a beating degree of 22-26°SR. Hardwood pulp with a wet weight of 2.0-3.0g, a beating degree of 30-33°SR, and a hemp pulp with a wet weight of 10.0-12.0g. Mix the three kinds of pulp evenly after beating and pump them to the pulping tank;

[0027] Step 3: Add f...

Embodiment 1

[0037] Step 1, disintegrating 20% ​​of the mass fraction of bleached softwood lignin mechanical pulp, 20% of bleached hardwood lignin pulp, and 60% of bleached kraft abaca pulp into 4% pulp;

[0038] Step 2, the three pulps that have been disintegrated are beaten by a refiner respectively to obtain softwood pulp with a beating degree of 35 ° SR and a wet weight of 10.0 g, and a coniferous wood pulp with a beating degree of 22 ° SR and a wet weight of 3.0 g. Leaf wood pulp, beating degree is 30 ° SR, hemp pulp pulp with wet weight 12.0g, the three kinds of pulp after beating are mixed and pumped to the slurry tank;

[0039]Step 3, add calcium carbonate to the slurry tank, the filling amount is 20%; mix evenly and pump to the slurry tank; add cationic starch, the amount is 0.4% of the dry pulp quality; the amount of carboxymethyl cellulose It is 0.5% of the absolute-dry pulp mass; the wet strength agent is polyamide epichlorohydrin resin, and the dosage is 0.5% of the absolute-d...

Embodiment 2

[0043] Step 1, disintegrating 30% of the mass fraction of bleached coniferous wood chemical pulp, 30% of bleached broadleaf wood chemical pulp, 40% of bleached kraft sandalwood pulp and goose skin pulp into a slurry with a concentration of 6%;

[0044] Step 2, the three pulps that have been disintegrated are beaten by a refiner respectively to obtain coniferous wood pulp with a beating degree of 38 ° SR and a wet weight of 8.5 g, and a coniferous wood pulp with a beating degree of 26 ° SR and a wet weight of 2.0 g. Leaf wood pulp, beating degree is 33 ° SR, hemp pulp pulp with wet weight 10.0g, the three kinds of pulp after beating are mixed and pumped to the slurry tank;

[0045] Step 3: Add talcum powder to the slurry forming tank with a filling amount of 15%; mix evenly and pump to the slurry tank; add cationic starch in an amount of 0.8% of the dry pulp quality; carboxymethyl cellulose dosage It is 0.8% of the absolute-dry pulp mass; the wet strength agent is polyamide epi...

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Abstract

The invention discloses flexible pipette lining paper and a preparation method thereof. The preparation method comprises the following steps of (1) disintegrating bleached softwood chemithermomechanical pulp, bleached hardwood chemithermomechanical pulp and bleached sulfate hemp pulp into a slurry, and respectively pulping through a pulping machine to obtain softwood pulp, hardwood pulp and hemp pulp; and (2) after mixing, adding a filler, starch, carboxymethyl cellulose, a wet strength agent, a sizing agent and a retention aid and then enabling the mixture to enter a flow pulp box, manufacturing paper with pulp through a fourdrinier, squeezing, drying, surface sizing, baking, calendering and coiling to obtain the flexible pipette lining paper. The flexible pipette lining paper prepared bythe invention can be made into a flexible pipette and is in line with the usage habit of people, and has high water resistance and wet strength, and can effectively block liquid penetration; and allindexes are in line with the national food packaging material safety standard.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a bendable straw backing paper and a preparation method thereof. Background technique [0002] With the improvement of economic level and quality of life, food packaging materials are widely used in commodities, which also brings about the increasingly serious problem of white pollution. Polystyrene, polypropylene, polyvinyl chloride and other plastic products are difficult to degrade after being discarded, causing serious pollution to the environment. With the implementation of the national ban on plastics, plastic tableware is gradually eliminated by the market. Paper materials are an excellent substitute for plastics due to their recyclable and degradable advantages. In recent years, it has gradually seized the food packaging market and has a broad prospect. [0003] Plastic has always been the main material for straws due to its good plasticity and thermosetting propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02D21F11/00D21H11/02D21H11/12D21H15/06D21H17/16D21H17/17D21H17/26D21H17/29D21H17/37D21H17/54D21H17/67D21H17/68D21H21/10D21H21/16
Inventor 赵新民伊财富徐冰杨菊红林俊辉
Owner 浙江恒川新材料有限公司
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