CN1042203A

CN1042203A - The paper that utilizes rag fiber to manufacture paper with pulp

Info

Publication number: CN1042203A
Application number: CN 89101379
Authority: CN
Inventors: 王大纯
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-11
Filing date: 1989-03-11
Publication date: 1990-05-16

Abstract

The invention discloses a kind of structural design of utilizing the compound paper of manufacturing paper with pulp of rag fiber, do not change technological process, can manufacture paper with pulp multiple paper as brown paper, all kinds of paperboard, corrugated paper etc. with original many nets of multi-cylinder cylinder mould machine or multilength net paper machine, rag aboundresources cheapness, the recycling that has particularly solved polyvinyl cloth paper combined package bag and all kinds of folder muscle composite packaging papers.Economic and social benefit is remarkable.

Description

The paper that utilizes rag fiber to manufacture paper with pulp

The present invention relates to a kind of compound paper with new structure and technology thereof of manufacturing paper with pulp of waste and old rag fiber of utilizing recovery.

With The development in society and economy, growing to the demand of paper, and the raw material of papermaking, particularly long fiber-xylon resource day is becoming tight.China's area of woods and amount of savings have only 18% and 13% of whole world per capita share, can will accuse exhaustion for the mature forest of felling to the end of this century, before and after 2010, in make woods also with out of stock.China will spend a large amount of foreign exchange foreign papers and paper at present.Though rag fiber early is much accounted of as the long fiber resource, but general low-grade saturating felts so far can only be used for manufacturing paper with pulp, reason is that kind mixes in the rag that reclaims, after must selecting through strict classification, manage the back outward by different processes respectively again and utilize, complex process cost height, it is big to implement difficulty, particularly in fact the compound technology of the assorted chemical fiber blended fabrics that has and other fibrous material complexity especially in the rag of those recovery can't be utilized.According to incomplete investigation: the vinylon and cotton blend composite packaging paper bag that can not recycle that Hebei, Henan two province part paper plants overstock, all kinds of ribbed paper bags etc. just have more than 5000 ton.

The objective of the invention is to design a kind of novel composite sheet structure, make it can be with traditional technological process and many nets of multi-cylinder cylinder mould machine and multilength net paper machine, get final product the compound novel composite sheet of manufacturing paper with pulp out, utilize sufficient and cheap rag fiber thereby reach, remedy long stapled deficiency, thereby the quality that improves paper enlarges range of application.Particularly solve polyvinyl cloth composite packaging paper bag and all kinds of folder muscle coated paper envelope can not be recycled the environmental pollution and the wasting of resources that is caused.

The present invention implements like this, with rag and the packing that reclaims, comprise all kinds of natural, artificial synthetic and blended fabrics and with the goods of other fiber composite, as polyvinyl cloth paper combined package bag and all kinds of folder muscle composite packaging paper bag, adding and being equivalent to the bone dry fiber amount is 5% hydrophilic agglomerant, make its beating degree reach 15 ° of-30 ° of SR as the polyvinyl alcohol binding agent, again with any slurries such as determined wood, cotton, fiber crops, grass, bamboo, reed as required, more than its consumption was controlled at and restrains for every square metre 15, the compound paper of manufacturing paper with pulp into got final product.

Design key of the present invention is that with the rag fiber slurry be core slurry, with any traditional paper pulp structural design that is starch adhesive.The hydrophilic agglomerant of adding 5% in the rag fiber slurry, beating degree is controlled at 5 ° of-30 ° of SR during making beating, fiber is evenly scattered in water, improve core slurry layer and starch adhesive layer in conjunction with fastness, improve the bulk strength and the deflection of paper, make every quality index of this kind composite sheet reach and surpass the quality index of original corresponding paper product kind.

Implement the present invention, improve the core slurry is that the ratio that rag fiber is starched can reduce cost as far as possible, make full use of the rag fiber resource, but in order to adapt to traditional compound papermaking process, its starch adhesive quantitatively should be higher than every square metre 15 gram, if because the outward appearance of paper does not reach when requiring, also should grasp flexibly according to actual needs and improve the quantitative of its starch adhesive.Surface layer can be manufactured paper with pulp and is upper surface during the NEW TYPE OF COMPOSITE paper of manufacturing paper with pulp, and also can manufacture paper with pulp is lower surface.

The design of employing said structure, the paper that promptly utilizes rag fiber to manufacture paper with pulp, its every quality index, technological process and equipment all need not to change can be implemented compound making and copies, the recycling that has improved rag fiber is worth, particularly to the recycling of polyvinyl cloth paper rescue bag pack and all kinds of folder muscle coated paper envelope, solved environmental pollution, saved high-quality long fiber resource, enlarged the range of application of paper, being that example is per ton according to measuring and calculating with 80 gram kraft sack papers increases sharp 1000 yuan, and economic benefit and obvious social benefit are worth promoting.

Embodiment 1: the shabby useless cloth that will reclaim is sent into troughing, add 5% polyvinyl alcohol binding agent again, pull an oar jointly, send into paper machine net groove when making it to reach 22 ° of SR of beating degree, on many nets of multi-cylinder cylinder mould machine or multilength net paper machine, be kraft sack paper with having made the compound surface layer of manufacturing paper with pulp into of standby wood pulp, sandwich layer be rag fiber paper pulp 80 the gram kraft sack papers, its wood pulp surface layer quantitatively be controlled at 15 the gram/every square metre.

Embodiment 2: adopt the method for embodiment 1, send into paper machine net groove when the beating degree of rag fiber slurry reaches 15 ° of SR, starch adhesive can be that compound the copying of wood pulp or straw pulp made kraft paperboard or high-strength corrugated paper.

Embodiment 3: the method that adopts embodiment 1, when reaching 30 ° of SR, the beating degree of rag fiber slurry sends into paper machine net groove, with compound white board or the art paper of manufacturing paper with pulp into of the bleached wood pulp starch adhesive of making, its starch adhesive quantitatively should be controlled at more than 30 grams, is as the criterion with the color that can cover in the core slurry fully.

Embodiment 4: adopt the method for embodiment 1, troughing is sent in the polyvinyl cloth paper combined package bag that reclaims and various ribbed paper packaging bags beaten send into paper machine net groove and compound brown paper, kraft paperboard, high-strength corrugated paper, white board, the art paper etc. of manufacturing paper with pulp into of embodiment 1,2,3 described any starch adhesives when beating degree is 15 ° of SR, 22 ° of SR or 33 ° of SR.

Claims

1, a kind of NEW TYPE OF COMPOSITE paper that utilizes rag fiber to manufacture paper with pulp as stock is characterized in that its sandwich layer is made of rag fiber, its surface layer can be the fiber pulp of any paper grade (stock), makes through compound manufacturing paper with pulp.

2, NEW TYPE OF COMPOSITE paper according to claim 1, the source that it is characterized in that rag fiber comprises natural cotton, hair, fiber crops, silk, also can comprise waste textile and all kinds of fiber mixed fabrics and and the compound goods of other fibrous material of the artificial polyvinyl that synthesizes, the continuous synthetic fibre of vinylon and cotton blend, terylene, acrylic, nylon fiber.

3, NEW TYPE OF COMPOSITE according to claim 1 and 2 is characterized in that each fibrid and other fibrous material composite product comprise polyvinyl cloth paper combined package bag, all kinds of folder muscle composite packaging paper bags etc.

4, NEW TYPE OF COMPOSITE paper according to claim 1 and 2 is characterized in that in rag stock participating in and is equivalent to bone dry fiber and is no less than 5% hydrophilic agglomerant, and as the polyvinyl alcohol binding agent, its beating degree is controlled at 15 ° of-30 ° of SR during making beating.

5, NEW TYPE OF COMPOSITE paper according to claim 1, it is characterized in that its surface layer is that upper surface also can be basal surface, the slurry kind can select for use the fiber pulp of traditional paper grade (stock) to manufacture paper with pulp becomes brown paper, all kinds of paperboard, corrugated paper paper, and it quantitatively should be higher than every square metre 15 gram.