CN106346588A

CN106346588A - Method for manufacturing packaging boards from leftover materials

Info

Publication number: CN106346588A
Application number: CN201610704017.4A
Authority: CN
Inventors: 邱艺; 潘礼珍; 薛晶晶; 李晓明
Original assignee: Tianjin Jili Guangda Pack Co Ltd
Current assignee: Tianjin Jili Guangda Pack Co Ltd
Priority date: 2016-08-21
Filing date: 2016-08-21
Publication date: 2017-01-25

Abstract

The invention discloses a method for manufacturing packaging boards from leftover materials. The method comprises the following technological steps of 1, selecting various leftover materials produced in the packaging box production process and smashing the leftover materials into sawdust; 2, performing screening, removing sundries, and selecting pure sawdust; 3, performing drying; 4, performing dosing, wherein by weight, 85.7% of sawdust, 13% of adhesives, 0.8% of a waterproof agent and 0.5% of a curing agent are placed into a large stirring bowl to be stirred to be uniform; 5, performing prepressing, wherein the stirred sawdust is placed into a molding mold, and a preforming press is used for performing cold press molding; 6, performing pressing, wherein the sawdust enters a hot press for performing high temperature press-fit molding; 7, placing the product horizontally, and performing cooling to be put in storage. The method has the advantages that the product performance is ensured, and the product material cost is greatly lowered; waste materials are recycled, a large number of wood resources are saved, about 45000 trees are not cut when the novel material is used within three years, and great economic and social benefits are created.

Description

A kind of method that utilization leftover pieces manufacture packaging plate

Technical field

The present invention relates to a kind of manufacture method of nonmetal plate, manufacture packaging plate particularly to a kind of using leftover pieces Method.

Background technology

In packaging field, during producing wood composite pallet, produce many leftover pieces, because leftover pieces size is irregular, And not of uniform size it is impossible to homogeneous classification recycle, thus result in substantial amounts of waste.

Content of the invention

The technical problem to be solved is to provide a kind of leftover pieces using production packing cratess generation to make after pulverizing Become the package box plate material suiting the requirements.

In order to solve above-mentioned technical problem, the technical solution used in the present invention is: one kind manufactures packing cratess using leftover pieces The method of sheet material, is characterized in that: the method comprises the technical steps that: one, produce in selection packing cratess production process is various Wooden leftover bits are ground into sawdust；2nd, sieve, remove impurity removing, select pure sawdust；3rd, it is dried；4th, dispensing；Including weight hundred The sawdust of point ratio: 85.7%, glue: 13%, waterproofing agent: 0.8%, firming agent: 0.5% puts into and stirs in large-scale a mixing bowl to equal Even；5th, precompressed: the sawdust after stirring is inserted in mould, uses preformer cold moudling；6th, suppress: enter hot press and enter Row high-temperature laminating molding enters hot press and carries out high-temperature laminating molding；7th, put in storage after keeping flat cooling.

Described sawdust moisture content 7% is dried；Glue is glue urea-formaldehyde resin adhesive, resin content more than 50%；Curative concentration is 20% nh4c1 solution, waterproofing agent solids content is 15% paraffin wax emulsion.

Described step 5 precompression controls in below 20kg/cm2, dissipates embryo, moisture control is 13 before preventing from entering hot pressing ～16%.

150 DEG C of the hot pressing temperature of described step 6 high-temperature laminating molding.

Described sawdust materials are poplar, Masson Pine, plywood or combination.

The invention has the beneficial effects as follows: while ensureing properties of product, considerably reduce product material cost；Waste material Recycle, save a large amount of timber resources, using this new material in 3 years, be equivalent to and fall trees about 45000 less, create Very big economy and social benefit.

Specific embodiment

With reference to specific embodiment, the present invention is described in further detail:

A kind of method that utilization leftover pieces manufacture package box plate material, the method comprises the technical steps that: one, selects packaging The various wooden leftover bits producing in case production process are ground into sawdust；2nd, sieve, remove impurity removing, select pure sawdust；3rd, It is dried；4th, by the sawdust being dried by quality sawdust: 85.7%, glue: 13%, waterproofing agent: 0.8%, firming agent: 0.5% puts into greatly Stir in a mixing bowl of type, generally require 3-8 minute；Sawdust moisture content 7%；Glue urea-formaldehyde resin adhesive, resin content 50% More than；Curative concentration is 20% nh4c1 solution, and waterproofing agent solids content is 15% paraffin wax emulsion；5th, after stirring Sawdust insert in mould, use preformer cold moudling, the template area 1220x1220mm of mould, thickness scalable, thick Degree scalable, precompression controls in below 20kg/cm2, dissipates embryo before preventing from entering hot pressing, and moisture control is 13～16%；6th, Entrance hot press carries out high-temperature laminating molding entrance hot press and carries out high-temperature laminating molding, the hot pressing temperature of high-temperature laminating molding 150℃；7th, keep flat, cool down after warehouse-in.

Sawdust materials are poplar, Masson Pine, plywood or combination, and other non-metallic debris are also in the scope of the present invention.

Package box plate material density: 0.64g/cm3；Nail-holding ability: >=1000n；Burst size of methanal≤0.1ppm)；Soak 24 little When expand do not surpass 2%.

The carrying out of the package box plate material index parameter of coming of new detects:

1. Density Detection

1. take the good sequence number of new material sample mark that 10 lengths are all 100mm, and calculate its volume record one by one In table；(volume: v unit: kg/m3)

2. the high electronic balance weighing of service precision goes out the weight of every piece of sample, and record is in corresponding sample number position；(matter Amount: m unit: kg)

3. according to density formula: density=mass/volume calculates.

2. burst size of methanal

1. prepare a 1000x1000x1000mm glass box, and whether the composition of air in detection case meets test strip Part.

2. take a fritter new material sample to put in glass box, open formaldehyde tester simultaneously and together put in glass box, Closed glass case, standing wait；

3. with 6 hours for a record period, continuously record 48 hours, and record institute on each cycle formaldehyde tester The numerical value of display, until having remembered 48 hours afterwards.

3. nail-holding ability test

1. prepare the new material sample of 10 100x100x100mm, the 2 small weapon nail nails being a diameter of 4mm of 50mm with length In the center position of each sample one side, hammer into 40mm；

2. using tension tester, tension test is carried out to each sample, according to test gained record corresponding data.

4. Soak Test.

1. prepare two glass drying ovens, be respectively put into two new material sample 100x100x100mm, fill water to flooding completely Do not have new material sample, soak.

2. with 4 hours for a record period, continuously record 24 hours, and record what each cycle new material was occurred Deformation quantity, until having remembered 24 hours afterwards.

Claims

1. a kind of method that utilization leftover pieces manufacture package box plate material, is characterized in that: the method comprises the technical steps that: one, The various wooden leftover bits producing in packing cratess production process are selected to be ground into sawdust；2nd, sieve, go impurity removing, select pure Sawdust；3rd, it is dried；4th, dispensing；Sawdust including percentage by weight: 85.7%, glue: 13%, waterproofing agent: 0.8%, firming agent: 0.5% puts into and is stirred until homogeneous in large-scale a mixing bowl；5th, precompressed: the sawdust after stirring is inserted in mould, uses precompressed Machine cold moudling；6th, suppress: entrance hot press carries out high-temperature laminating molding entrance hot press and carries out high-temperature laminating molding；7th, put down Let cool and but put in storage afterwards.

2. the method that a kind of utilization leftover pieces according to claim 1 manufacture package box plate material, is characterized in that: described drying Sawdust moisture content 7%；Glue is glue urea-formaldehyde resin adhesive, resin content more than 50%；Curative concentration is 20% nh4c1 solution, Waterproofing agent solids content is 15% paraffin wax emulsion.

3. the method that a kind of utilization leftover pieces according to claim 1 manufacture package box plate material, is characterized in that: described step Five precompressions control in below 20kg/cm2, dissipate embryo, moisture control is 13～16% before preventing from entering hot pressing.

4. the method that a kind of utilization leftover pieces according to claim 1 and 2 manufacture package box plate material, is characterized in that: described 150 DEG C of the hot pressing temperature of step 6 high-temperature laminating molding.

5. the method that a kind of utilization leftover pieces according to claim 1 and 2 manufacture package box plate material, is characterized in that: described Sawdust materials are poplar, Masson Pine, plywood or combination.