JP2000017241A - Quick-drying glue for corrugated cardboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a re-hydrating drying glue composition having characteristics accepted by the market in the corrugated cardboard industries. SOLUTION: A drying glue composition composed of a dry blend of starch and a pre-soluble cellulose extract can readily be re-hydrated by water to prepare a glue for corrugated cardboard. The glue for corrugated cardboard does not contain a borane compound, besides, it contains no or minimum amount of an alkali. A dry pre-soluble compound, cellulose extract contains a hemicellulose and functions as a carrier part of the glue for corrugated cardboard. Production of the carrier does not require the first cooking and re- hydration can be performed under ambient temperatures.

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] FIELD OF THE INVENTION This invention relates to starch-based cardboard.
The present invention relates to an adhesive composition for use. In particular, in the present invention, for cardboard
Dry which can be easily rehydrated with water to produce adhesive
It relates to a blend composition. This adhesive uses a boron compound
No and no or only minimal amounts of alkali
Manufactured without addition. [0002] 2. Description of the Related Art Generally used for preparing an adhesive for cardboard.
Users who reduce or omit medications used
Are increasingly demanding. This market trend is environmental
It comes from protection and safety concerns. Use
Cardboard that is easy to use and stable over time
There is also a demand for adhesives for metal. Until now, these properties
Adhesives for cardboard that are accepted in the market with
Not announced. [0003] In the method of manufacturing corrugated cardboard, the adhesive is put in place.
It is generally applied to the top of the skin. At that time, the shape of the step
Flat paper liner with corrugated rolls and press rolls
When passing through the gap between the
Can be attached. The resulting product is a medium lining with one side corrugated
And has a flat liner on the other side,
It is called so-called single-sided cardboard. Single-sided cardboard remains
May be used or contact the top of the single-sided cardboard.
Apply the adhesive and apply a second flat sheet to the first sheet
It may be attached in the same manner as in the above. This is a “double-sided”
Or "double-back" method. two
The second liner sheet is heated immediately after contact with the adhesive
And (the pressure used to manufacture single-sided cardboard
Treated with a reduced pressure. [0004] Carriers, non-carriers and carriers
-A starch-based adhesive that may be non-carrier
It is commonly used in cardboard manufacturing processes. Carrier type
In the case of glue, part of starch (or dextrin)
But suspends the remaining starch in a non-gelatinized state
It forms a carrier well known as the gelatinized phase.
Under heating and pressure conditions, ungelatinized starch quickly
The mixture is hydrated and gelatinized, and the viscosity and
And instantaneously increase adhesion. Non-carrier type adhesive
If necessary, remove all starch by heat and caustic
Cooking or swelling slightly
Moisturize. Finally, a carrier-non-carrier type adhesive
Produces a carrier and is responsible for about half of the viscosity
Contains some starch owed and the remaining viscosity
Is obtained by slightly swelling the uncooked starch
You. [0005] Water-soluble adhesive compositions are disclosed in US Pat.
No. 6,613. This adhesive is wet
Lignose Hydrolyzed under High Temperature and High Pressure in the Presence of Minutes
Consists of Lulose. The water-soluble reaction product is recovered and dried
It is enriched in the state. Rehydration is slurry with methanol
And refluxing while passing ammonia through it
It is done by doing. This composition is also filtered and dried.
Can be dried. Hemicellulose addition for paper coating compositions
Additives are disclosed in U.S. Pat. No. 2,772,981.
Have been. This hemicellulose is used to coat paper.
Although it can be completely replaced with the adhesive component, starch,
Advantageously added together with a string or similar
It is disclosed as a composition. This patent is a rehydratable
The rye composition is not described. [0007] Adhesion for corrugated cardboard containing a solubilized fiber component
The agent is disclosed by Fitt in U.S. Pat. No. 5,358,559.
The specification and US Patent No. by Ciesfeld et al.
No. 5,503,668. on site
Adhesive used in solubilization process
There is. Unlike the present invention, the above-mentioned documents do not
Re-water with acceptable properties for markets used in industry
No wettable dry adhesive composition is disclosed. In this specification and claims,
Parts and percentages are by weight / weight (w / w) unless otherwise specified.
w). [0009] DETAILED DESCRIPTION OF THE INVENTION The extracted hemicellulose material (where
Is about 25% to about 100%, preferably about 70% on a dry basis.
From about 100% to about 100% soluble material
Free-flowing dried vegetable fiber) and starch
The dry blend composition consists of only adding water,
Rehydrate without adding any other ingredients
Adhesives can be made. Dry blend composition
The amount of extracted hemicellulosic material in the material is generally from about 5% to about
50%, preferably about 8% to about 30%. Extracted
The hemicellulose material is used as a carrier for the adhesive.
Works. Cereals are an important source of hemicellulose,
In an advantageous embodiment, the extracted hemicellulose material is corn
Extracted from sorghum fiber and wheat fiber. Corn fiber
Wei is particularly advantageous. [0010] The extracted hemicellulose material (where
Percentage variation of soluble substances in the "extract"
Is the amount required to produce the dry blend composition
And the percentage of soluble components is high,
The amount used can be reduced. For example, soluble
An extract with 100% of ingredients is better than an extract with 50% of soluble ingredients
Can also be used at low concentrations. Extract is soluble component
If it can be considered as 100%, dry blend
One hundred of the soluble components obtainable from the extract in the composition
The fraction is about 8 based on the total weight of the dry blend composition.
% To about 15%, preferably about 9% to about 14%
It is. The paste for cardboard according to the present invention is
Dry blend composition in a single tank without going through the King stage
, High- or low-shear batch mixer, continuous mixer
-For example, Warner & Pfleiderer
Single- or twin-screw extruder, Baker P
erkins Rotofed mixer or Ke
nis Corporation static mixer
It is produced by hydration. Hydration is about 5
Hydrate the composition to a smooth paste for 10 minutes or
Complete by mixing for a time sufficient to do so.
Therefore, the instant adhesive for corrugated cardboard does not require the addition of boron compounds.
And no or only minimal amounts of alkali
Obtained without. In many applications, adhesive paste
A sufficient amount of water to provide the pH value of the article from about 7 to about 14.
Add alkali if lukari is present in the extract
No need to do. Carrier phase is pre-solubilized with alkali
Good bonding (caustic "eating" in the paper)
Required for "incorporation") and lower gelation temperature
Sufficient alkali is generally present to obtain
You. [0012] DETAILED DESCRIPTION OF THE INVENTION A dry blend composition is extracted and
Consisting of hemicellulosic material and starch. This composition
Manufactured without the use of boron compounds (eg borax and boric acid)
And, depending on the type of starch used,
With no added alkali or minimal amount of alkali
Can be [0013] Extracted hemi in dry blend composition
The amount of cellulosic material is generally about 5% to about 50%, preferably
About 8% to about 30%. However, these ranges
The box is about 25% to about 100%, preferably about
Use extracts containing 70% to about 100% soluble material.
And as noted above, here
As is clear to those skilled in the art based on the disclosure, the extract
The percentage variation of soluble matter in the
Affects the amount required for production. One hundred soluble components
Extracts with higher fractions compare soluble component percentages
The amount used is at least better than that of an extract that is relatively low. Extraction
The percentage of soluble components obtained from products is
About 5% to about 50%, based on the total weight of the composition, preferably
Should be about 8% to about 30%. Pre-solubilized
Dried cellulose extract and extracted hemi described here
Cellulosic materials contain about 3% to about 10% moisture.
Carrier or cookie when the adhesive is hydrated
It has a function as a cooked part. The paste for cardboard according to the present invention is
The blend composition in a single tank or
Hydrate without primary cooking step in Ksar
Manufactured by forming the carrier part by
You. Hydration reduces the dry blend composition from about 65% to about 8%.
Produces an adhesive paste with a total moisture content of 0%
By mixing with a sufficient amount of water to
You. Mixing lasts about 5-10 minutes or the composition is lubricated.
Sufficient time to hydrate to a clear paste (long
Not too short). The hydration temperature is relatively
Low, typically about 18-52 ° C (62-125 ° F).
And the time required for hydration is generally
Is relatively short. Therefore, instant adhesive for cardboard is
It is obtained with no or minimal addition of potash and
Never require a boron compound during manufacture. The starch is corn starch, for example, pearl starch
Glue paste (pearl starch)
Sufficient alkali to give the material a pH of about 7 to about 14.
If liquor is present in the cellulose extract, remove alkali
No need to add. However, when alkali is needed
Before adding the dry blend composition to the water or
It may be added later. This depends on the type of starch used
It is related to the gelatinization temperature, which can be changed depending on it. For example,
When using barley starch, do not add caustic
It is known that a suitable cardboard adhesive can be manufactured
You. Therefore, the gelatinization temperature of the starch is about 60-66 ° C (140 ° C).
F to 150 ° F), the adhesive is caustic
No alkali added or relatively little caustic
It can be manufactured with the added amount. Another way to take this into account is
130 ° F (54 ° C) to 7 ° C regardless of pH
2 ° C. (162 ° F.), preferably about 60 ° C. (140 ° F.)
F) An adhesive gelatinization temperature ranging from about 68 ° C (155 ° F).
Use sufficient caustic to make [0016] The starch component of the present invention comprises bulbs of many plants,
Can be obtained from stems or nuts by customary methods, about
5% to about 15%, most commonly about 8% to about 12% moisture
Has content. Are advantageous starches corn and barley?
Other starches, such as wheat,
Manufactured from pioca, potato and the like
Starches are also suitable. Mixtures of starches from various sources
Can be used. Even if starch is modified,
A combination of the modified starch and the unmodified starch may be used. Deki
The string itself may be used, but may be native and / or
Alternatively, they can be used in combination with modified starch. Low gelatinization temperature
Unmodified starch is advantageous for this reason and barley starch is advantageous for this reason.
Powder. However, it has a relatively high gelatinization temperature
Corn starch is useful when economics are considered most important.
It is profitable. The extracted hemicellulose material of the present invention is
Manufactured by treating plant fibers with an alkaline extractant
Is done. Any strong base can be used, but
Useful bases are alkali metal hydroxides, especially hydroxylated
Calcium, potassium hydroxide or sodium hydroxide
Most advantageous, these are generally referred to herein as alkalis.
I do. Any plant fiber rich in hemicellulose
Can be used. Advantageous raw materials are corn hulls and shells
Corn fiber, wheat fiber and barley fiber including corn and germ
Wei. The best considerations when selecting suitable plant material
Also important is the percentage of soluble components,
Does not have 100% hemicellulose. Negligible amount
Soluble protein, other soluble cellulose, some starch
The presence of flour and their analogues is greater than about 50
Not harmful unless it is about 30% or less, especially
Preferably it is 5% or less. Insoluble components
If too much, they act as diluents and bind
Strength is reduced. Therefore, the insoluble component is about 7% of the plant material.
It should not exceed 5%, preferably about 3% of the plant material
Should not exceed 0%. Hemicellulose is present in many living plants.
Natural polymers that are used according to the present invention.
Can be derived from various raw materials. Its name is in plant tissue
Derived from its close relationship with cellulose
Once considered a precursor for cellulose synthesis
I was This material is subject to fracture and mechanical shearing.
Is a relatively strong substance that prevents the viscosity from
You. It is completely compatible with starch. Hemicell
Loin can be used to reduce molecular weight and increase viscosity.
Can be partially hydrolyzed. Hemicellulose is arabano-xylan (ara)
bano-xylan) and glucuronic acid
-Membered xylan with similar additional side chains (pentosans)
It is based on structure. This skeletal structure is similar to cellulose.
Β-1,4-bond similar to the bond obtained. That much
Although the child structure is different from starch and cellulose
There are many similarities available to combine
It is a functional hydroxyl group. The structure of hemicellulose changes significantly
The general structure is listed below.
RU: [0020] Embedded imageThe outer skin of the corn kernel is hemicellulose.
High content, hemicellulose can be easily extracted from it
Especially in hemicellulose
Good raw material. The greatest potential of hemicellulose
It is not contaminated (that is,
One of the (non-hazardous) ingredients is from the corn wet milling industry.
Is a corn fiber produced by Advantageous of corn fiber
Kind is the Corn Products Uni
t of CPC InternationalIn
c. , P. O. Box 8000, Anglewood
  Cliffs, New Jersey 07632
PEERLESS by US^(R)corn five
r is an edible corn fiber marketed under the trade name r. An advantageous embodiment of the present invention is the hydration with water.
From about 95% to about 50% starch, and dry base
About 5% containing about 25% to about 100% soluble material
~ 50% of pre-solubilized dry cellulose extract
Corrugated cardboard contacts made of boron compounds
Adhesive (hereinafter also referred to as adhesive paste)
Is a dry blend composition capable of obtaining Reserve
The solubilized dry cellulose extract has some residual alkali
And in the adhesive paste, from about 7 to about
PH of 14 or about 54 ° C-72 ° C (130 ° F-1
62 ° F.), preferably about 60 ° C. to 68 ° C. (140 ° F.)
To 155 ° F.) (here also referred to as “gel”)
Say) there is enough residual alkali to give the temperature
When manufacturing paste-like materials, alkalis
No need to add. Starch is generally from about 8% to about 12%.
Pre-solubilized dry cellulose with moisture content
The extract has a moisture content of about 3% to about 10%. Hydrating the advantageous dry blend composition described above
About 65%
Drying sufficient water to provide a total moisture content of about 80%
Mix with eBlend. In the most advantageous embodiment
Is a US patent application serial no. 08/244,
Uses by-products of the process described in EP 036
I do. The contents disclosed in this U.S. patent application are listed here
Shall be done. CPC International
  Inc. , Englewood Cliffs,
Available from NJ 07632 USA and called Z-SOL
This by-product can be prepared as follows:
RU: 1. Dry crushed and refined corn fiber is 10% weight /
Suspend in volume of solution. Refined corn fiber
Or bran is Vetter- derived from the hull of corn.
90% total dietary fiber (TDF) from presscake
Or 90% TDF dry ground fiber. 2. Potassium hydroxide (KOH) was suspended and purified
Added to corn fiber to a concentration of 1.5% w / v and
Corn fiber maintained at 176 ° F (80 ° C) for 2.5 hours
Insoluble substances in the product, mainly from insoluble cellulose to hemise
Lulose (and any remaining starch and how many
Protein). 3. Water, fiber and KOH solution at the same volume of 80 ° C
Dilute with water and filter. Cheese black as a filtration medium
(Cheesecloth) can be used. 4. The filtrate contains soluble Z-SOL and if neutralized
If necessary, neutralize with hydrochloric acid (HCl)
You may. Next, Z-SOL is precipitated using alcohol.
Let it. Spray dry or oven dry this material
Is also good. 5. The dried material is ground to a suitable particle size and
Therefore, the dry blend composition of the present invention is obtained by dry mixing with starch.
Manufacturing things. Corrugated paper from the dry blend composition
The production of a baked product is quite simple. The first important thing is
The time required to hydrate this material. mass
Occurs several minutes before it first disappears and disappears
You. As explained above, the temperature may be slightly
Can facilitate hydration of the dry blend composition.
You. The pre-solubilized dry cellulose extract
Besides the most advantageous embodiment, it has the same purity as Z-SOL.
Various other advantageous embodiments which have not been
May be used. Low Total Dietary Fiber ("TDF") Vet
ter-press cake and alkali treated
Spont germ is processed in a single step method
The hemicellulose and some soluble starch and
About 50% to 50% of soluble components including soluble proteins
Producing a pre-solubilized dry substance containing
Can be. In our experiments, alkali treated Vett
er-presscake is dry at a concentration of 20-35%
Alkali-treated spen used for blend composition
Germ at a concentration of 18-28% in the dry blend composition
use. On the other hand, Z containing about 100% soluble components
-SOL can be advantageously used in the range of 8% to 12%.
it can. This experiment demonstrates the pre-solubilized dry corn fiber
Has an advantageous concentration range of about 8% to 30%.
I made it. How to at least stabilize viscosity more than 8%
Give or separate from paste after a short time
Not enough carrier is supplied to prevent this.
Less than about 30% pre-solubilized fiber of low solubility
In some cases, insoluble substances are generated, which harms the quality of the joint. The theory of the present invention results in a good strong bond.
Components that may be useful to be present in insoluble substances
It is. Maybe a certain amount of hemicelluloe still attached
Cellulose-containing residual cellulose bridges paper voids
Present as "sticky" platelets or platelets. [0027] 【Example】Example 1 88% of commercial (CB) pearl starch and 12%
% Of the Z-SOL in a dry blend composition as follows:
Manufactured in the laboratory:Rehydration:   2022 mL of water (water temperature = ambient temperature) is added to a 4 L tank,   Add 675 g of the dry blend composition,                                                 Mix for 10 minutes,   31 g of alkali (50% strength NaOH) is added,                                         Mix / heat for 10 minutes / 38 ° C. [0028]analysis   Final temperature: 38 ° C   Stein-Hall viscosity: 40 seconds   Gel temperature: 62-66 ° C   Solids content (commercially available): 25%Stability : Water at 38 ° C with paste produced
Put directly in the bath and use a blade-type stirrer for 5 minutes
30 minute stirring cycle with agitation and 25 minute agitation stop
Is performed several times. [0029]time Stein Hall viscosity (sec) Record     1 hour 40 No retention of starch in the lower part.                                       Bubbles collect in the center of the car     2 hours 41 No retention of starch in the lower part.                                       Bubbles collect in the center of the car     Overnight (18 hours) 40 No starch precipitation in lower part, bubbles gather                                       NotExample 2: Pilot plant tests at the Institute o
f Paper Science and Technology (IPST), Atlan
14 with C-type flut roll in GA
Inch Longston Single Sided Corrugator
This is performed using Use this machine for 42 pounds of kraft paper
Commercial using Ina or 35lb high performance liners
Run at speed, in both cases 26 pounds
to paste together. 88% commercial (CB) pearlstar
Blend consisting of raw material and 12% Z-SOL
The composition is applied to a twin shell-drive render
l dry blender) and add 25 times for 10 minutes
Invert / min, mix 40 pounds. This dry blend group
The product is hydrated into a paste. The corrugator uses a heated line
Immediately before contact with the
This paste is applied to the top of the corrugated
To produce the first bonded product. Paste-like material
40 gallon mixing with paddle-type stirrer with constant speed
It is manufactured using a machine. About 10 gallons of paste
To manufacture. 20 g of insulated paste
Transfer to Ron storage tank. From this storage tank
Circulates paste-like material through a small impeller pump
You. The preparations and results are summarized in Table 1.
12% [w / w (total weight of commercial products)] in the carrier phase
Compositions containing Z-SOL can be any conventional starch paper.
It shows characteristics similar to the stratified preparation. 8% Z-SOL
Pastes can be used quite well, but the carrier
Insufficient solids in phase, harden in minutes without stirring
The liquid phase is generated quickly after the reaction. 15% Z-SO
In the experiment using L, a high-viscosity finished paste was obtained.
It is. At this Z-SOL level, the finished paste
Increases to an unusable level. Therefore, Z-SO
The L level should be less than about 15%. The paste Q4 (Table 1) contains a boron compound.
Contains no alkali paste.
This paste has a 33% commercial (CB) total solids content
Manufactured using in-situ Z-SOL premix. This
Of the preparation of C.I. B. Total solids content (percentage) is customary
More than standard ones. 33% commercial (CB)
Total solids content is commercially available suspended (denatured)
Or unmodified) generally contains more solids than carrier starch
Large amount. This relatively high percentage of C.I. B. Including solids
Large amounts are carriers made from pre-solubilized plant fiber.
It can be obtained by using an Ahr phase. High percentage of C.I.
B. Solids content reduces the amount of water that must be evaporated
That will reduce the heat required by the corrugator
It is important. Less heat required to evaporate water
More heat can be used for starch gelatinization.
Possible, which can be higher than the normal gelatinization temperature
Allows the use of pastes produced in
You. In this case, corn starch / pre-solubilized plant
Manufactured using natural fiber and added alkali
No paste-like material at 68-70 ° C (155-158 °
It has a gelatinization temperature in the range of F). This is cornstar
Gelatinization at only 71-74 ° C (160-165 ° F)
The temperature is comparable to that of the pre-solubilized cellulose extract of the present invention.
Exudate carrier is causing gel temperature to decrease
You. Therefore, one embodiment of the present invention is
Fruits from the dried pre-solubilized cellulose extract described here
Carrier qualitatively constituted or consisting of said extract
It is a dry composition for producing. This dry composition is
Hydrated and produces adhesive paste as described above
When you do, you become a carrier. Paste Q4 is 35 points
Using high-performance liners and 26-pound
IPST 14 inch Langston single-sided corrugated board
The test is carried out on a tool making equipment. This paste becomes liquid after curing.
Does not occur. In Table 1, the last paragraph of T1 is Z-SOL / Large.
Made from wheat starch-dry blend. Contains no borax,
This paste without caustic added is
It can be applied very well to such devices. This paste
Hydrate very quickly and dry blend with water
Apply to the above device for 15 minutes after mixing. Gelatinization temperature
The degree is measured as 66 ° C (150 ° F). Barley starch was used in place of pearl starch
In some cases, the gelatinization temperature ranges from about 74 ° (165 ° F.) to about 6 °.
6 ° (150 ° F.). Gelatinization for barley starch
The temperature is about 5-15 ° C lower than for corn starch
Produces caustic adhesive with customary solids content
Can not do it. Gelatinization similar to gelatinization temperature of barley starch
Other starches with temperature and modified starches have similar functions.
Imagine. [0036]Table 1 Pilot print test Borax-free, caustic-free or low caustic-content cardboard adhesive                     Alkali pastes Alkali-free pastes Experiment number Q1 Q2 Q3 Q4 TI Date Feb. 7 Apr. 23 Apr. 23 Apr. 24 Jun. 28 Type of fiber Z-SOL Z-SOL Z-SOL Z-SOL Z-SOL Variety of starch Soluble fiber replacement rate (%) 12 12 8 12 12 Boron compound Not included Not included Not included Not included Not included Alkali contained contained contained not included not includedPreparation                                                                    Water (L) 38 36 36 38 40 Heat (F) 105 120 100 105 120 Soluble fiber / bal starch (lb) 28 22 34 41 29.4 Mixing (min) 10 10 10 10 10 Sodium hydroxide (50/50) (g) 576 464 370 0 0 Mixing (min) 10 10 10 0 0 Final temperature (° F) 84 81 93 97 100 Final viscosity (sec) (Steinhole) 47 67 26 67 26 Final solidification temperature (° F) 142 145 147 152-158 150 Table 2 shows the pilot projects using pastes of each batch.
The results of the runt corrugated cardboard production are shown. Each experiment number
Is premix code number, high performance at low paper temperature
Experiments in liners ("HPL") or at high paper temperatures
Experiment with high performance liner ("HPL")
Rule gap: Using several thousandths of an inch,
Display in:     Q1 experiment number-Q1-HPL-8 Q1-HPH-8                       Q1-HPL-12 Q1-HPH-12                       Q1-HPL-20 Q1-HPH-20     Q2 experiment number-Q2-HPL-12                       Q2-HPL-20     Q3 experiment number-Q3-HPL-12                       Q3-HPL-20     Q4 experiment number-Q4-HPL-8                       Q4-HPL-12 Samples for each experiment were 300 ft / min (fpm), 5
00 fpm and 700 fpm (or completely delaminated)
Before harvesting at a higher rate). Edge damage, flat
Damage to the part, single face dry pin bonding
 TAPPI test method for adhesiveness and fiber detachment rate (%)
[The technical Association of Pulp and Paper Indu
stry, Inc. (TAPPI: Technical Association of the Pulp and Paper Industry)
Tests for joint strength, edge damage and flats damage.
Includes rye pin bonding. Detailed description of this test method
Was published in TAPPI test method 1989, and TAPPI, One D
unwoody Park, Atlanta, GA 20241 Available from USA
You. Test for each sample using All of
Figures show this machine about conventional carrier starch glue
Equal to or better than the results in Edge of Q1
Damage results are greater than all edge damage results from previous experiments
Is also excellent. The green bond measurement was performed using a step board.
6 from the cut-in part (nip) on the delivery side of the manufacturing roll
At the end of the one-sided liner, in inches
To sandwich the device with two wedges placed in
This is done. The wedge does not come into contact with the liner and
Begin to peel from liner while upward force on side edge
Cause. Delamination is more likely to be centered as machine speed increases.
Once it goes inside. Strong green bonds are out of the middle
Causes very little delamination in the lateral direction. Machine speed
If you advance it, the green strength will weaken,
Peeling proceeds inward toward the center of the one-sided web
You. Used to indicate green bond strength
The measurement method was Batelka, J.J., Tappi J.75 (10): 94 (1992),
The Institute of Paper Science & Technology, Atlan
It can be seen from ta and GA. This measurement uses induction time only.
This places at least some of the shins in the center of the liner.
Necessary to produce sufficient green strength to
Time. For example, a typical induction time is 80 milliseconds.
You. In other words, the liner is
Green bond enough to fix some of the
To set, from when the paper leaves the nip
It takes at least 80 ms. Use Equation (1) for induction time
Is calculated. (1) Time (ms) = [6 in./machine speed]
× 12] × 60 × 1000 Induction time of pearl carrier starch paste is 50 min.
Res (ms). Inventor's carrier starch paste
Is 60 to 80 ms. Shortest induction time binds to type
Is the shortest time needed to                             Table 1A   Borax-free cardboard adhesive / Pilot plant IPST green bonded   Result (2)     Paste-Maximum speed Minimum induction time     IPST experiment number (fpm) (millisecond)   ────────── ─────── ────────      Q1-HPL-20 355 85      Q2-HPL-12 438 68      Q2-HPS-20 415 72      Q3-HPH-12 388 77      Q3-HPH-20 363 83      Q4-HPL-12 345 87      Q4-HPL-8 388 77 (2) Hold the wedge inserted 6 inches from the nip
One ISPT 14 "Langston-Single Fesa
- [0040]Table 2                               Test results               CPC February IPST single-facer test                       Edge damage Flat area damage Single-sided pin bonding Fiber detachment rate                        (# / In) (PSI) (# / 24Ln In) (%) Sample display Average S.D.Average S.D.Average S.D. 207-Q1-HPL-8 300fpm 23.2 2.0 35.8 1.0 72.5 7.9 Medium               500fpm 24.4 1.0 38.0 1.8 77.2 7.9 Medium               700fpm 24.6 2.2 38.6 0.5 56.6 8.0 0% 207-Q1-HPL-12 300fpm 27.0 1.9 37.6 1.9 85.0 6.3 Medium               500fpm 27.0 1.8 39.2 0.7 90.1 2.3 Medium               700fpm 25.5 3.2 37.3 1.9 70.3 10.9 0% 207-Q1-HPL-20 300fpm 28.4 1.3 37.1 1.0 111.8 4.2 Medium               500fpm 28.7 1.2 38.8 0.9 108.3 3.1 Medium               700fpm 25.5 1.5 39.2 1.8 52.8 11.6 0% 206-P3-HPL-12 300fpm 24.3 1.5 36.1 1.4 73.8 11.6 Medium               500fpm 25.8 1.5 38.9 0.8 80.8 7.4 Medium               700fpm 23.9 1.3 43.0 1.0 73.2 9.0 Medium 206-P3-HPL-20 300fpm 26.9 1.5 36.6 0.5 96.0 11.6 Medium               500fpm 27.0 2.0 37.5 0.8 91.0 5.2 Medium               700fpm 26.1 1.0 41.1 1.0 81.2 5.6 Medium 206-P3-KRH-12 300fpm 22.5 1.7 30.9 1.1 102.8 3.7 Medium               500fpm 24.3 2.3 30.5 1.4 82.6 4.1 Medium               700fpm 24.1 1.8 32.1 0.9 73.7 5.8 Medium 206-P3-KRH-20 300fpm 26.3 2.1 31.7 1.1 112.7 5.9 Medium               500fpm 24.1 1.6 30.3 1.1 103.9 4.9 Medium               700fpm 22.2 2.0 33.2 1.2 93.6 6.4 Medium 207-Q1-HPH-8 300fpm 23.8 1.9 37.0 0.8 68.3 3.7 Medium               500fpm 25.4 1.7 38.6 0.9 70.9 2.9 Medium               700fpm 22.8 2.8 37.3 1.4 58.5 5.3 Medium 207-Q1-HPH-12 300fpm 24.8 1.9 36.1 1.7 79.1 5.4 Medium               500fpm 25.6 1.0 38.4 1.4 91.5 5.9 Medium               700fpm 24.0 1.0 38.0 1.7 61.2 8.1 Medium 207-Q1-HPH-20 300fpm 28.1 1.7 37.5 0.7 107.5 6.3 Medium               500fpm 24.7 1.5 40.0 1.0 109.2 6.5 Medium               600fpm 26.3 1.5 39.9 1.1 105.5 4.8 Medium               700fpm 24.4 2.4 40.1 1.7 99.0 5.9 Medium                                 Table 2(Continued)                               Test results                     CPC Single Facer Test                       Edge damage Flat area damage Single-sided pin bonding Fiber detachment rate                        (# / In) (PSI) (# / 24Ln In) (%) Sample display Average S.D.Average S.D.Average S.D. 423-Q2-HPL-12 300fpm 21.2 2.1 31.4 0.5 77.7 5.9 M               500fpm 19.9 1.2 31.5 1.8 81.3 4.7 M               700fpm 21.0 1.3 32.8 1.5 75.3 1.7 M 423-Q2-HPL-20 300fpm 19.7 1.3 30.5 0.6 107.6 4.7 M               500fpm 20.3 1.5 32.3 1.2 97.9 3.7 M               700fpm 21.1 2.2 31.4 1.2 68.4 2.4 M 423-Q3-HPL-12 300fpm 20.1 1.9 31.5 0.9 111.4 3.9 M               500fpm 20.3 1.9 31.5 1.6 90.8 6.8 M               700fpm 21.8 1.8 32.8 2.6 52.7 9.3 O 423-Q3-HPL-20 300fpm 22.8 2.2 30.1 0.5 114.0 6.1 M               500fpm 20.5 2.2 31.4 0.6 51.2 7.8 O               615fpm 22.3 1.3 30.9 1.0 44.5 9.2 OM 423-Q4-HPL-12 600fpm 19.7 1.9 35.2 1.3 57.2 13.1 O 423-Q4-HPL-08 300fpm 19.9 2.0 33.1 1.8 89.2 2.5 M               500fpm 21.3 1.4 35.2 0.8 87.5 1.9 M               600fpm 21.2 1.4 33.5 0.8 67.1 9.7 M               700fpm 19.7 1.4 33.9 1.2 56.1 8.6 O 424-Q4-HPL-12 300fpm 22.1 2.2 32.6 1.5 101.4 2.5 M               500fpm 20.0 2.7 32.3 1.2 88.2 5.1 M 4244Q4HSKR-08 300fpm 24.0 1.5 29.9 0.6 81.0 8.3 M               500fpm 21.9 0.9 31.7 0.6 84.0 5.2 M               600fpm 22.4 2.2 32.8 0.5 81.4 3.5 M               650fpm 25.0 1.8 29.8 1.3 63.8 7.8 M 424Q4HSKRS-8 300fpm 25.7 1.1 30.1 1.0 108.6 2.4 M               500fpm 24.7 1.3 31.0 0.6 104.9 5.3 M               550fpm 22.1 1.5 30.6 0.4 86.3 7.5 M               600fpm 24.4 2.0 30.6 1.1 68.1 27.1 O                                 Table 2A                               Test results                     CPC Single Feather Test                       Edge damage Flat area damage Single-sided pin bonding Fiber detachment rate                        (# / In) (PSI) (# / 24Ln In) (%) Sample display Average S.D.Average S.D.Average S.D. 628-TI-KRH-12 300fpm 23.0 1.9 28.8 0.7 94.7 3.8 10               500fpm 21.3 2.1 30.3 0.6 95.4 1.8 0 *               600fpm 21.6 1.5 30.0 0.9 78.1 11.6 0               700fpm 22.0 1.7 30.6 0.8 77.4 6.7 0Example 3 Paste of Q series manufactured using Z-SOL
Good viscosity stability for all materials over 24 and 48 hours
Showed sex. Table 3 shows the results. Each paste
Leave thing overnight in unheated container. Temperature and
And viscosity, and then paste the material into a water bath.
Heat to 100 ° F (38 ° C) and measure viscosity again
Set. The viscosity of the cooled paste is
It increases more than the viscosity of the paste. However, this cold
The viscosity of the paste paste is the starch carrier paste
Between 24 and 48 hours as expected for
Show no increase. 24 hours and 48 hours
Surprisingly, the viscosity of the first paste
It is close to the viscosity of the paste. This is also the starch carrier pace
It was unexpected about the thing. [0041]Table 3   Pilot plant test   Stein-Hall seconds, free of boron compounds and alkali-free Viscosity of low-moisture or low-alkali cardboard instant adhesives Paste viscosity 24 hours after production Viscosity after 48 hours Remarks               Viscosity / (° F) Cold hot (100 ° F) Cold hot (100 ° F)   Q1 60/68 61/68 ° F 36 liquid layer   Q2 67/81 80/72 ° F 60 88/68 ° F 50 Liquid layer   Q3 26/93 27/72 ° F 25 30/68 ° F 25 liquid layer   Q4 67/97 110/70 ° F 66 Non-liquid layer   R1 60/108 500/84 ° F 500 Non-liquid layer   S1 27/98 38/84 ° F 31 Liquid layerExample 4 Table 4 also shows how much shear stability Q4 has.
You. At the end of the experiment, a shear test was performed on this paste.
Do. After almost 20 minutes in a high shear mixer, paste
The material decreases in viscosity by 15 styhole seconds. More
Many descents were expected.Table 4                       Pilot plant test                       Paste Q4                       High shear mixer (1)               Time (minute) Steinhole viscosity (second)           ─────────────────────────                 0 73                 1 73                 3 72                 5 68                 7 67                 9 64               13 62               1958 (1) 4 "dia head, 3 hours, 3500
Revolutions / minExample 5 Lower pre-solubilization in solubilized fiber than Z-SOL
Test the cellulose extract. This material is Z-SOL
A sufficient amount to suspend pearl starch compared to
Must be used in large quantities to provide soluble material. Table 5 shows the results for the two pastes.
The result is shown. R1 in the first formula is pre-treated with alkali
Made from dried Vetter-press fiber
Manufactured with a dry pre-stabilized cellulose extract.
The paste is a 35% pre-solubilized dry cellulos
With a pre-mix of sucrose extract and 65% corn starch
To manufacture. Add sulfuric acid to the paste and extract after processing.
Neutralizes some caustic remaining in the product, but
The results show that this is not necessary. Contains borax
This substance, which has no added alkali
The quality of the corrugated cardboard produced using the
Used in corn starch composition without added caustic
It is the highest possible amount. The second preparation S1 contains Vetter-pre
Spent flakes (s
pent flake). This paste is 28%
Dried pre-solubilized cellulose extract and 72% corn
Manufactured using a pre-mix with starch. this
Paste to neutralize Vetter-presscake
Adjust to neutral pH for the same reason. This paste
The material is applied to paper together, but the result is a medium concentration of 28%.
Smell (no alkali added) paste
It turns out that this is the upper limit of this substance. [Paste
The addition of alkali to (paste S8) is
Improves the quality of the paste, but the alkali is produced
When replacing (%), the viscosity of the material is increased.
It is needed. ]Table 5                       Pilot plant test     Low-purity soluble fiber BEPEX- Solidair method   ───────────────────────────────────   Case number R1 R2 R3     Fiber type Vetter press Strain flakes Gent flakes     Types of pearl starch Cone Cone Cone     Degree of substitution of soluble fiber (%) 35 28 28     Boron compound Not included Not included Not included     Addition of alkali No addition No addition Addition   Preparation     Water (L) 43 54 33     Heating (° F) 120 120 100     Soluble fiber (lb) 12.25 10.5 5.6     Mixing (min) 5 2-     Sulfuric acid 290 220-     Mixing (min) 5 5-     Pearl starch 22.75 34.2 294     Mixing (min) 10 10 10        Final temperature (° F) 108 98-     Final viscosity (sec) (Stein-Hall) 60 27 84     Final cell temperature (° F) 165 169-     Final pH 5.9--                                 Table 3                       Single-facer test                       Edge damage Flat area damage Single-sided pin bonding Fiber detachment rate                        (# / In) (PSI) (# / 24Ln In) (%) Sample display Average S.D.Average S.D.Average S.D. 627-R1-KRH-12 300 23.4 1.5 29.5 0.6 39.2 2.3 0                 500 20.0 1.3 28.9 0.5 15.3 3.0 0                 700 Liner peeling----- 627-R1-KRH-12 500 18.3 1.0 29.1 0.5 18.5 4.1 0                 600 Liner peeling----- 627-S1-KRH-12 300 21.3 1.5 28.3 0.7 58.1 2.8 0                 500 19.3 1.9 28.1 1.0 20.1 3.7 0                 580 20.5 1.8 29.1 0.4 25.5 2.6 0 1114-S8-HPH-12 300 22.8 0.9 36.6 0.7 63.9 3.6 0                 500 22.3 1.0 38.3 1.0 55.6 2.4 0                 700 liner peeling 1114-S8A-HPH-12 300 25.1 1.2 38.3 1.5 69.5 4.4 0                 500 23.6 1.9 36.4 0.8 59.4 4.5 0                 700 21.1 1.6 36.9 1.0 26.5 6.8 0

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Jack Earl Wallis             Bo, Illinois, United States, 60440             Ringbrook, Peace Avenue,             125 (72) Inventor Tami Brandt-Janel             New York, 60451, Illinois, United States             -Lenox, South Pine Street             909 F-term (reference) 4J002 AB012 AB041 AH002 AJ002                       DE046 GJ01 HA06 HA09                 4J040 BA022 BA111 BA232 BA242                       HA146 JA05 JA07 LA03                       NA07 QA05

Claims (1)

Claims: 1. About 5% containing about 95% to about 50% starch, and about 25-100% on a dry basis soluble matter.
~ 50% of pre-solubilized dry cellulose extract, optionally containing alkali and free of boron compounds, can be hydrated with water to produce a cardboard adhesive. Dry blend composition. 2. The composition of claim 1, wherein the pre-solubilized dried cellulose extract has a particle size of less than about 80 US mesh. 3. The composition according to claim 1, wherein the pre-solubilized dried cellulose extract is derived from plant fibers or cereals. 4. The composition according to claim 1, wherein the pre-solubilized dried cellulose extract is derived from corn fiber, wheat fiber or barley fiber. 5. The composition of claim 1, wherein the starch is selected from the group consisting of corn starch and barley starch. 6. The composition of claim 1, wherein the pre-solubilized dried cellulose extract contains from about 70% to about 100% soluble material on a dry weight basis. 7. The composition of claim 1, comprising from about 8% to about 30% of the pre-solubilized dry cellulose extract. 8. The composition of claim 1, wherein the pre-solubilized dried cellulose extract contains about 3% to about 10% moisture. 9. A cardboard adhesive composition comprising the dry blend composition of claim 1 and water in an amount sufficient to provide a total moisture content of about 80% to about 95%. 10. The composition according to claim 9, having a pH value from about 7 to about 14. 11. The composition of claim 9 having a gelatinization temperature of about 54 ° C. to about 72 ° C. 12. A starch-based cardboard adhesive carrier, comprising a pre-solubilized dry cellulose extract containing from about 25% to 100% of soluble matter and dry alkali on a dry basis. And a composition for lowering the gelatinization temperature of starch. 13. The composition of claim 12, wherein the amount of residual alkali is sufficient to provide the corrugating adhesive with a pH value of about 7 to about 14. 14. The composition of claim 12, wherein the amount of residual alkali is sufficient to provide a corrugating adhesive with a gelatinization temperature of about 54 to about 72 ° C. 15. About 5% containing about 95% to about 50% starch and about 25 to 100% soluble matter on a dry basis.
% To about 50% of a pre-solubilized dry cellulose extract, the method of making a dry blend instant adhesive for cardboard. 16. An amount of water sufficient to provide a total moisture content of about 65% to about 80%, sufficient to hydrate the composition of claim 1 into a smooth paste. The method of hydrating a composition according to claim 1, wherein the composition is mixed with the composition for a period of time. 17. The method of claim 16, wherein the sufficient time is from about 5 to about 10 minutes. 18. The method according to claim 16, wherein the hydration is performed at a temperature of about 18-52 ° C. 19. A method for producing corrugated cardboard, comprising bonding a middle lining to at least one liner using the adhesive composition for corrugated cardboard according to claim 9. 20. Corrugated cardboard produced by the method of claim 19.