115 Papermaking
I can't find the reason for the breakthrough, and Lin Yan doesn't bother with it, as long as the result is good.
Excited, Lin Yan didn't feel sleepy for a while, so he found a book and started reading.
I don't know when, but I fell asleep while watching.
When I woke up again, it was bright. Lin Yan relied for a while, and suddenly realized that today was September 5th, less than a month away from the cold season.
There are a lot of things to prepare at home, I don't know if A-Niang has started to do it.
A Gollum got up and looked at the whole house.
Because of the successive reclamation, the sun-dried haystacks are piled very high, and there is a lot of firewood, which should be enough.
There are already fifty or sixty pikas in the circle, and the circle is full, Lin Yan feels that the circle is a little small, and it is not good to squeeze it like this. The pikas are wilting and can't be used.
Nowadays, the necessary material in the cold season in Sun City is charcoal, which is very cheap, and you can buy six catties for a penny, but the bonus is reluctant to spend this money, and usually picks up firewood.
Lin Yan thought, when he was free, he went to buy some charcoal to prepare. Anyway, her salary is enough, as long as she doesn't go shopping for clothes, she thinks she is still quite rich.
In the kitchen, there were four bags of hemp chestnuts, three cans of hemp seed oil, and all kinds of dried fruits and jerky.
After checking it, Lin Yan felt that the habit of storing food engraved in the bones of the bonus had always been there, and he was preparing it all the time, so he was afraid that there would be nothing to eat.
In fact, many people have such a habit. They used to be hungry and frightened, but now that the conditions are much better, they still can't change their old habits.
Hua Bonus took care of the house very well, and Lin Yan felt that he was just worrying about it. Let's go about our own business.
When he arrived at the papermaking workshop, Bai Chen had already come and brought a few people to move the vat.
Seeing Lin Yan, she said excitedly: "Why are you here?" ”
Without waiting for Lin Yan to speak, Bai Chen pulled her to the front of the vat, "This is the latest slurry that has been blended, it has been washed once, and hairy chestnut powder has been added, I am going to filter it again, and then make paper." ”
Lin Yan looked at the yellow-brown slurry in the tank, with some impurities floating on it, and she said, "Do what you want, I'll take a look first." ”
In fact, Bai Chen is very clear about the papermaking process, and all links are strictly controlled, but the results are unsatisfactory.
Lin Yan is to take a look at what went wrong, help improve, and strive for the consistent quality of each batch of yellow paper.
Now it is only a small-scale trial production, and the process is not stable, and if the scale is expanded, it will be a disaster.
The whole process of papermaking takes a long time, and it also requires manpower, and if you can't make a qualified finished product, it is a huge consumption.
With Lin Yan here, Bai Chen's confidence increased greatly, and he did the next work in an orderly manner.
The filtration of the slurry is to use several layers of burlap as a filter cloth, and after filtering out all the impurities visible to the naked eye, the slurry looks much cleaner.
Lin Yan personally made paper, copied the papermaking frame in the pulp, and let the pulp stay evenly on the papermaking mold frame.
She looked at the papermaking mold frame, and there was very little pulp left.
"What's wrong, is there a problem with the papermaking mold frame?" Bai Chen asked nervously.
Lin Yan said: "The papermaking mold frame is not fine enough, and the pulp residue is very small, so we have to find a way to change it." Did you make paper before, did you only do it once? ”
The current papermaking mold frame is made of fine pampas grass, which has good toughness and is resistant to water immersion. It looks smooth and there are no gaps, but after passing through the slurry, I can't hold the slurry.
Bai Chen nodded, "Yes, I have been trying to change the slurry after making paper." ”
She quickly reacted, "You mean, copy it a few times, the amount of pulp residue is different, and the paper made is not the same?" ”
"Yes. You can't see the difference between one and two times, but there must be a difference between one and five times. Just take this batch and do an experiment, copy it once, twice, to 20 times, and let's compare the difference between the paper. ”
Bai Chen and Lin Yan worked together and made ten of each. Mark it and dry it lightly before putting it in the baking room.
The temperature of the baking room is controlled at about 30 degrees Celsius to ensure that the water evaporates at the same rate, and the paper made is smoother.
After a busy day, the two were exhausted.
Lin Yan sighed: "It's more tiring than working in the field." ”
"I'm used to it, and I don't feel like it's doing it every day." Bai Chen's eyes lit up, "After two days of baking, you can uncover the paper, I have a hunch that I will definitely succeed this time." As soon as you came, you found a loophole, why didn't I think of that. ”
"I'll wait until the results come out. Sometimes it doesn't feel accurate, but your pulp is very well done, delicate and viscous this time. ”
In the next two days, Lin Yan and Bai Chen plunged into the papermaking workshop, constantly observing the changes in the paper in the baking room.
It is recorded every half an hour, and the whole drying process is recorded in great detail.
When the drying was completed, everyone's eyes widened when they looked at the flat paper on the papermaking mold frame.
"This looks like good paper, each one is flat and wrinkled."
"It's just better than every time I watched it before."
Bai Chen restrained the excitement in his heart, "When the paper is unveiled, it will be done." ”
Lin Yan touched it with his hand, and there was a slight roughness, but it felt much better than the previous yellow paper.
She turned on her mental power and carefully began to uncover the paper.
When a piece of paper was peeled off, the crowd cheered immediately.
Everyone thinks that Lin Yan's paper is perfect, and the flat paper looks the same as in the papermaking mold frame, without a little wrinkle.
This is not something that anyone can do.
Bai Chen couldn't do it herself, she had done it many times, but she still couldn't achieve Lin Yan's effect.
The paper in Lin Yan's hand was made of paper, it was very thin, and when looking at the sun, it had good light transmittance.
"Lin Yan, you take off the remaining samples, one of each, and we will use them for comparison." Bai Chen urged, her heartbeat accelerating.
This time, the paper made over and over again was successful, and the remaining samples should also be successful, let Lin Yan do it, and the paper taken off will look different. The contrast will be clearer and the results will be more accurate.
Lin Yan nodded, and carefully took off one of each sample, a total of twenty sheets of paper. Her hands were steady and there were no mistakes.
The people who usually unveiled the paper in the workshop were greatly shocked when they saw the paper that Lin Yan uncovered. They've done it themselves, so they know better how difficult it is. How the hell did she do it, there was no flaw at all.
Twenty sheets of paper were spread out on the table, and at a glance, they were almost identical.
But if you look closely, the difference is significant.
From No. 1 to No. 20, it corresponds to the number of times the paper was made, and the thickness of the paper gradually changed. From thin to thick, you can immediately notice the difference as soon as you touch it.
Bai Chen touched them one by one, and he was sure in his heart that Lin Yan was right. The number of passes you make paper is very important, and if you want to make thick paper, the more times you have, the better.
She said: "This time it was a big success, and thanks to you, we will soon have paper." ”
The rest of the workshop was also excited, they had worked hard for more than half a year, with little success, and many people were becoming more and more unconfident.
But today, they are full of faith.
(End of chapter)