WHY LOTION PUMPS CAN'T REBOUND AFTER PRESSING

First of all, it is necessary to check whether there is a problem with the lotion pumps spring. The effect of the spring on the piston cannot be ignored. If the spring is damaged, it will easily lead to the return stroke of the piston is not in place. slow.

Secondly, check whether the thickness of the lotion pumps piston fits the body. During the movement of the piston, any trace of the gap will cause weak suction, and the material will not be pressed by the head. Since plastics have the properties of thermal expansion and contraction, normal pistons are very important to ensure the quality of lotion pumps.

Finally, let's analyze the body. In view of the scalability of the plastic, if the operation is inappropriate during injection molding, insufficient injection will cut off a thin layer of the body, resulting in uneven inner walls, and the piston is inevitably left during the stamping process Gaps, resulting in failure to discharge.

MULTILAYER PCB

Multilayer PCB is a circuit board that has more than two layers.
Unlike a Double-Sided PCB which only has two conductive layers of material, all multilayer PCBs must have at least three layers of conductive material which are buried in the center of the material.

How Are Multilayer PCBs Made?
Alternating layers of prepeg and core materials are laminated together under high temperature and pressure to produce Multilayer PCBs. This process ensures that air isn't trapped between layers, conductors are completely encapsulated by resin, and the adhesive that holds the layers together are properly melted and cured. The range of material combinations is extensive from basic epoxy glass to exotic ceramic or Teflon materials.

The figure above illustrates the stackup of a 4-Layer/ multilayer PCB. Prepeg and core are essentially the same material, but prepeg is not fully cured, making it more malleable than the core.The alternating layers are then placed into a lamination press. Extremely high temperatures and pressures are applied to the stackup, causing the prepeg to "melt" and join the layers together. After cooling off, the end result is a very hard and solid multilayer board.

Benefits of Multilayer PCBs (compared to single or double-sided PCBs)
Higher assembly density
Smaller size (considerable savings on space)
Increased flexibility
Easier incorporation controlled impedance features.
EMI shielding through careful placement of power and ground layers.
Reduces the need for interconnection wiring harnesses (reduces overall weight)

Amitron is an Experienced Multilayer PCB Manufacturer
Amitron has been producing Multilayer PCBs for over 20 years. Over the years, we have seen all types of multilayer constructions from various industries, answered all types of multilayer questions, and solved all types of problems with multilayer PCBs.

Benefits OF Building Resin Model Car

If you build scale models in your free time, chances are you already know the excellent benefits of assembling resin models car and how they can improve your cognitive function. For those that aren't familiar, here are the top five benefits of scale modeling. From emotional support to learning new and fascinating historical facts, there are some distinct benefits that come with this hobby.

Exercise Your Artistic Skills

With any project, the creative side of your brain gets much-needed exercise. Scale model building is an art form, and while you can follow the directions exactly or paint the model in historically accurate fashions, you can also paint outside of the lines and add your own personal flair. There are no right or wrong ways to build a model—it's all up to your personal preference and what you hope to get out it.

Learn the History of Your Models

Whether building models of WWII bombers or an 80’s muscle car, scale model building provides a unique opportunity to dive deep into the history of the vehicle you're building. In fact, before making our own models, we usually spend hours scouring the web for details about the vehicle's paint-scheme, when it first was used, and other relevant facts.

Learning about your resin models car before starting will give you a deeper appreciation for the craftsmanship and design that went into the full-scale original vehicle and entice you even more so to complete it.

Test Your Organization Skills

Scale models come in many shapes and sizes, some with hundreds of parts and some models with only a dozen. Regardless, at every skill level, you have to be able to complete the project by organizing the components of the model and following a list of detailed steps to end up with a beautiful piece.
If you skip any steps, you could end up with extra parts or a model that looks nothing like you had envisioned. With experience comes more skill, but at the start, organization and following the instructions is a fundamental benefit to building models.

Clear Your Head

Taking a break from the stresses of everyday life to sit down for a couple of hours and build a resin models car is a great stress reliever and is often recommended for people working high-stress jobs. Especially if you are an introvert or enjoy your alone time, scale model building is an excellent outlet for stress by focusing on the steps in the instructions or trying to exercise your creativity with the paint scheme.

Building a Collection

If you love collecting things, model making is definitely the hobby for you. Along with the other benefits we listed above, at the end of the building process, you're left with a beautiful scale model of a classic car, plane, or another vehicle to proudly display on the shelf and appreciate for years to come.